diff --git a/gulpfile.js b/gulpfile.js
index ad08101711..639f238a80 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -3,14 +3,13 @@
 const paths = require('./config/paths.json')
 const gulp = require('gulp')
 const taskListing = require('gulp-task-listing')
-const runsequence = require('run-sequence')
 const taskArguments = require('./tasks/gulp/task-arguments')
-const nodemon = require('nodemon')
 
 // Gulp sub-tasks
 require('./tasks/gulp/clean.js')
 require('./tasks/gulp/lint.js')
 require('./tasks/gulp/compile-assets.js')
+require('./tasks/gulp/nodemon.js')
 require('./tasks/gulp/watch.js')
 // new tasks
 require('./tasks/gulp/copy-to-destination.js')
@@ -20,16 +19,17 @@ require('./tasks/gulp/sassdoc.js')
 // Umbrella scripts tasks for preview ---
 // Runs js lint and compilation
 // --------------------------------------
-gulp.task('scripts', cb => {
-  runsequence('js:compile', cb)
-})
+gulp.task('scripts', gulp.series(
+  'js:compile'
+))
 
 // Umbrella styles tasks for preview ----
 // Runs js lint and compilation
 // --------------------------------------
-gulp.task('styles', cb => {
-  runsequence('scss:lint', 'scss:compile', cb)
-})
+gulp.task('styles', gulp.series(
+  'scss:lint',
+  'scss:compile'
+))
 
 // Copy assets task ----------------------
 // Copies assets to taskArguments.destination (public)
@@ -42,70 +42,53 @@ gulp.task('copy:assets', () => {
 // All test combined --------------------
 // Runs js, scss and accessibility tests
 // --------------------------------------
-gulp.task('test', cb => {
-  runsequence(
-    'scss:lint',
-    'scss:compile',
-    cb
-  )
-})
+gulp.task('test', gulp.series(
+  'scss:lint',
+  'scss:compile'
+))
 
 // Copy assets task for local & heroku --
 // Copies files to
 // taskArguments.destination (public)
 // --------------------------------------
-gulp.task('copy-assets', cb => {
-  runsequence(
-    'styles',
-    'scripts',
-    cb
-  )
-})
-
-// Dev task -----------------------------
-// Runs a sequence of task on start
-// --------------------------------------
-gulp.task('dev', cb => {
-  runsequence(
-    'clean',
-    'copy-assets',
-    'sassdoc',
-    'serve',
-    cb
-  )
-})
+gulp.task('copy-assets', gulp.series(
+  'styles',
+  'scripts'
+))
 
 // Serve task ---------------------------
 // Restarts node app when there is changed
 // affecting js, css or njk files
 // --------------------------------------
+gulp.task('serve', gulp.parallel(
+  'watch',
+  'nodemon'
+))
 
-gulp.task('serve', ['watch'], () => {
-  return nodemon({
-    script: 'app/start.js'
-  })
-})
+// Dev task -----------------------------
+// Runs a sequence of task on start
+// --------------------------------------
+gulp.task('dev', gulp.series(
+  'clean',
+  'copy-assets',
+  'sassdoc',
+  'serve'
+))
 
 // Build package task -----------------
 // Prepare package folder for publishing
 // -------------------------------------
-gulp.task('build:package', cb => {
-  runsequence(
-    'clean',
-    'copy-files',
-    'js:compile',
-    cb
-  )
-})
-gulp.task('build:dist', cb => {
-  runsequence(
-    'clean',
-    'copy-assets',
-    'copy:assets',
-    'update-assets-version',
-    cb
-  )
-})
+gulp.task('build:package', gulp.series(
+  'clean',
+  'copy-files',
+  'js:compile'
+))
+gulp.task('build:dist', gulp.series(
+  'clean',
+  'copy-assets',
+  'copy:assets',
+  'update-assets-version'
+))
 
 // Default task -------------------------
 // Lists out available tasks.
diff --git a/package-lock.json b/package-lock.json
index 127a648106..a7a44ae103 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -792,6 +792,15 @@
         "normalize-path": "^2.1.1"
       }
     },
+    "append-buffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/append-buffer/-/append-buffer-1.0.2.tgz",
+      "integrity": "sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=",
+      "dev": true,
+      "requires": {
+        "buffer-equal": "^1.0.0"
+      }
+    },
     "append-transform": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/append-transform/-/append-transform-1.0.0.tgz",
@@ -838,12 +847,30 @@
       "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
       "dev": true
     },
+    "arr-filter": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/arr-filter/-/arr-filter-1.1.2.tgz",
+      "integrity": "sha1-Q/3d0JHo7xGqTEXZzcGOLf8XEe4=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
       "integrity": "sha1-NgSLv/TntH4TZkQxbJlmnqWukfE=",
       "dev": true
     },
+    "arr-map": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/arr-map/-/arr-map-2.0.2.tgz",
+      "integrity": "sha1-Onc0X/wc814qkYJWAfnljy4kysQ=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-union": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
@@ -890,12 +917,66 @@
         "es-abstract": "^1.7.0"
       }
     },
+    "array-initial": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/array-initial/-/array-initial-1.1.0.tgz",
+      "integrity": "sha1-L6dLJnOTccOUe9enrcc74zSz15U=",
+      "dev": true,
+      "requires": {
+        "array-slice": "^1.0.0",
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
+    "array-last": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/array-last/-/array-last-1.3.0.tgz",
+      "integrity": "sha512-eOCut5rXlI6aCOS7Z7kCplKRKyiFQ6dHFBem4PwlwKeNFk2/XxTrhRh5T9PyaEWGy/NHTZWbY+nsZlNFJu9rYg==",
+      "dev": true,
+      "requires": {
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
     "array-slice": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
       "integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w==",
       "dev": true
     },
+    "array-sort": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/array-sort/-/array-sort-1.0.0.tgz",
+      "integrity": "sha512-ihLeJkonmdiAsD7vpgN3CRcx2J2S0TiYW+IS/5zHBI7mKUq3ySvBdzzBfD236ubDBQFiiyG3SWCPc+msQ9KoYg==",
+      "dev": true,
+      "requires": {
+        "default-compare": "^1.0.0",
+        "get-value": "^2.0.6",
+        "kind-of": "^5.0.2"
+      },
+      "dependencies": {
+        "kind-of": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "dev": true
+        }
+      }
+    },
     "array-union": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
@@ -973,6 +1054,18 @@
         }
       }
     },
+    "async-done": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/async-done/-/async-done-1.3.1.tgz",
+      "integrity": "sha512-R1BaUeJ4PMoLNJuk+0tLJgjmEqVsdN118+Z8O+alhnQDQgy0kmD5Mqi0DNEmMx2LM0Ed5yekKu+ZXYvIHceicg==",
+      "dev": true,
+      "requires": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.2",
+        "process-nextick-args": "^1.0.7",
+        "stream-exhaust": "^1.0.1"
+      }
+    },
     "async-each": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
@@ -991,6 +1084,15 @@
       "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==",
       "dev": true
     },
+    "async-settle": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-settle/-/async-settle-1.0.0.tgz",
+      "integrity": "sha1-HQqRS7Aldb7IqPOnTlCA9yssDGs=",
+      "dev": true,
+      "requires": {
+        "async-done": "^1.2.2"
+      }
+    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -1275,6 +1377,23 @@
         "regenerator-runtime": "^0.11.0"
       }
     },
+    "bach": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/bach/-/bach-1.2.0.tgz",
+      "integrity": "sha1-Szzpa/JxNPeaG0FKUcFONMO9mIA=",
+      "dev": true,
+      "requires": {
+        "arr-filter": "^1.1.1",
+        "arr-flatten": "^1.0.1",
+        "arr-map": "^2.0.0",
+        "array-each": "^1.0.0",
+        "array-initial": "^1.0.0",
+        "array-last": "^1.1.1",
+        "async-done": "^1.2.2",
+        "async-settle": "^1.0.0",
+        "now-and-later": "^2.0.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -1436,7 +1555,6 @@
       "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
       "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
       "dev": true,
-      "optional": true,
       "requires": {
         "arr-flatten": "^1.1.0",
         "array-unique": "^0.3.2",
@@ -1493,6 +1611,12 @@
         "node-int64": "^0.4.0"
       }
     },
+    "buffer-equal": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/buffer-equal/-/buffer-equal-1.0.0.tgz",
+      "integrity": "sha1-WWFrSYME1Var1GaWayLu2j7KX74=",
+      "dev": true
+    },
     "buffer-from": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
@@ -1725,7 +1849,6 @@
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.1.5.tgz",
       "integrity": "sha512-i0TprVWp+Kj4WRPtInjexJ8Q+BqTE909VpH8xVhXrJkoc5QC8VO9TryGOqTr+2hljzc1sC62t22h5tZePodM/A==",
       "dev": true,
-      "optional": true,
       "requires": {
         "anymatch": "^2.0.0",
         "async-each": "^1.0.1",
@@ -2360,7 +2483,6 @@
           "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-3.1.0.tgz",
           "integrity": "sha1-nmr2KZ2NO9K9QEMIMr0RPfkGxa4=",
           "dev": true,
-          "optional": true,
           "requires": {
             "is-glob": "^3.1.0",
             "path-dirname": "^1.0.0"
@@ -2371,7 +2493,6 @@
               "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-3.1.0.tgz",
               "integrity": "sha1-e6WuJCF4BKxwcHuWkiVnSGzD6Eo=",
               "dev": true,
-              "optional": true,
               "requires": {
                 "is-extglob": "^2.1.0"
               }
@@ -2383,7 +2504,6 @@
           "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.1.tgz",
           "integrity": "sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==",
           "dev": true,
-          "optional": true,
           "requires": {
             "is-extglob": "^2.1.1"
           }
@@ -2392,8 +2512,7 @@
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
           "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
-          "dev": true,
-          "optional": true
+          "dev": true
         }
       }
     },
@@ -2667,6 +2786,17 @@
         "void-elements": "^2.0.1"
       }
     },
+    "collection-map": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/collection-map/-/collection-map-1.0.0.tgz",
+      "integrity": "sha1-rqDwb40mx4DCt1SUOFVEsiVa8Yw=",
+      "dev": true,
+      "requires": {
+        "arr-map": "^2.0.2",
+        "for-own": "^1.0.0",
+        "make-iterator": "^1.0.0"
+      }
+    },
     "collection-visit": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
@@ -2834,6 +2964,16 @@
       "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
       "dev": true
     },
+    "copy-props": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.4.tgz",
+      "integrity": "sha512-7cjuUME+p+S3HZlbllgsn2CDwS+5eCCX16qBgNC4jgSTf49qR1VKy/Zhl400m0IQXl/bPGEVqncgUUMjrr4s8A==",
+      "dev": true,
+      "requires": {
+        "each-props": "^1.3.0",
+        "is-plain-object": "^2.0.1"
+      }
+    },
     "core-js": {
       "version": "2.5.6",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.5.6.tgz",
@@ -3260,6 +3400,23 @@
       "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
       "dev": true
     },
+    "default-compare": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/default-compare/-/default-compare-1.0.0.tgz",
+      "integrity": "sha512-QWfXlM0EkAbqOCbD/6HjdwT19j7WCkMyiRhWilc4H9/5h/RzTF9gv5LYh1+CmDV5d1rki6KAWLtQale0xt20eQ==",
+      "dev": true,
+      "requires": {
+        "kind-of": "^5.0.2"
+      },
+      "dependencies": {
+        "kind-of": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "dev": true
+        }
+      }
+    },
     "default-require-extensions": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/default-require-extensions/-/default-require-extensions-2.0.0.tgz",
@@ -3277,14 +3434,11 @@
         }
       }
     },
-    "defaults": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/defaults/-/defaults-1.0.3.tgz",
-      "integrity": "sha1-xlYFHpgX2f8I7YgUd/P+QBnz730=",
-      "dev": true,
-      "requires": {
-        "clone": "^1.0.2"
-      }
+    "default-resolution": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/default-resolution/-/default-resolution-2.0.0.tgz",
+      "integrity": "sha1-vLgrqnKtebQmp2cy8aga1t8m1oQ=",
+      "dev": true
     },
     "define-properties": {
       "version": "1.1.3",
@@ -3359,12 +3513,6 @@
       "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=",
       "dev": true
     },
-    "deprecated": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/deprecated/-/deprecated-0.0.1.tgz",
-      "integrity": "sha1-+cmvVGSvoeepcUWKi97yqpTVuxk=",
-      "dev": true
-    },
     "destroy": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
@@ -3536,6 +3684,16 @@
         "stream-shift": "^1.0.0"
       }
     },
+    "each-props": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/each-props/-/each-props-1.3.2.tgz",
+      "integrity": "sha512-vV0Hem3zAGkJAyU7JSjixeU66rwdynTAa1vofCrSA5fEln+m67Az9CcnkVD776/fsN/UjIWmBDoNRS6t6G9RfA==",
+      "dev": true,
+      "requires": {
+        "is-plain-object": "^2.0.1",
+        "object.defaults": "^1.1.0"
+      }
+    },
     "ecc-jsbn": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
@@ -4770,15 +4928,26 @@
       }
     },
     "findup-sync": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/findup-sync/-/findup-sync-2.0.0.tgz",
-      "integrity": "sha1-kyaxSIwi0aYIhlCoaQGy2akKLLw=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/findup-sync/-/findup-sync-3.0.0.tgz",
+      "integrity": "sha512-YbffarhcicEhOrm4CtrwdKBdCuz576RLdhJDsIfvNtxUuhdRet1qZcsMjqbePtAseKdAnDyM/IyXbu7PRPRLYg==",
       "dev": true,
       "requires": {
         "detect-file": "^1.0.0",
-        "is-glob": "^3.1.0",
+        "is-glob": "^4.0.0",
         "micromatch": "^3.0.4",
         "resolve-dir": "^1.0.1"
+      },
+      "dependencies": {
+        "is-glob": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.1.tgz",
+          "integrity": "sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==",
+          "dev": true,
+          "requires": {
+            "is-extglob": "^2.1.1"
+          }
+        }
       }
     },
     "fined": {
@@ -4838,6 +5007,48 @@
       "integrity": "sha1-2uRqnXj74lKSJYzB54CkHZXAN4I=",
       "dev": true
     },
+    "flush-write-stream": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/flush-write-stream/-/flush-write-stream-1.1.1.tgz",
+      "integrity": "sha512-3Z4XhFZ3992uIq0XOqb9AreonueSYphE6oYbpt5+3u06JWklbsPkNv3ZKkP9Bz/r+1MWCaMoSQ28P85+1Yc77w==",
+      "dev": true,
+      "requires": {
+        "inherits": "^2.0.3",
+        "readable-stream": "^2.3.6"
+      },
+      "dependencies": {
+        "process-nextick-args": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
+          "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==",
+          "dev": true
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "dev": true,
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "dev": true,
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          }
+        }
+      }
+    },
     "for-in": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
@@ -4916,6 +5127,16 @@
         "jsonfile": "^2.1.0"
       }
     },
+    "fs-mkdirp-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-mkdirp-stream/-/fs-mkdirp-stream-1.0.0.tgz",
+      "integrity": "sha1-C3gV/DIBxqaeFNuYzgmMFpNSWes=",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "through2": "^2.0.3"
+      }
+    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
@@ -5509,15 +5730,6 @@
         "wide-align": "^1.1.0"
       }
     },
-    "gaze": {
-      "version": "0.5.2",
-      "resolved": "https://registry.npmjs.org/gaze/-/gaze-0.5.2.tgz",
-      "integrity": "sha1-QLcJU30k0dRXZ9takIaJ3+aaxE8=",
-      "dev": true,
-      "requires": {
-        "globule": "~0.1.0"
-      }
-    },
     "generate-function": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/generate-function/-/generate-function-2.3.1.tgz",
@@ -5643,83 +5855,57 @@
       }
     },
     "glob-stream": {
-      "version": "3.1.18",
-      "resolved": "https://registry.npmjs.org/glob-stream/-/glob-stream-3.1.18.tgz",
-      "integrity": "sha1-kXCl8St5Awb9/lmPMT+PeVT9FDs=",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/glob-stream/-/glob-stream-6.1.0.tgz",
+      "integrity": "sha1-cEXJlBOz65SIjYOrRtC0BMx73eQ=",
       "dev": true,
       "requires": {
-        "glob": "^4.3.1",
-        "glob2base": "^0.0.12",
-        "minimatch": "^2.0.1",
-        "ordered-read-streams": "^0.1.0",
-        "through2": "^0.6.1",
-        "unique-stream": "^1.0.0"
+        "extend": "^3.0.0",
+        "glob": "^7.1.1",
+        "glob-parent": "^3.1.0",
+        "is-negated-glob": "^1.0.0",
+        "ordered-read-streams": "^1.0.0",
+        "pumpify": "^1.3.5",
+        "readable-stream": "^2.1.5",
+        "remove-trailing-separator": "^1.0.1",
+        "to-absolute-glob": "^2.0.0",
+        "unique-stream": "^2.0.2"
       },
       "dependencies": {
-        "glob": {
-          "version": "4.5.3",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-4.5.3.tgz",
-          "integrity": "sha1-xstz0yJsHv7wTePFbQEvAzd+4V8=",
-          "dev": true,
-          "requires": {
-            "inflight": "^1.0.4",
-            "inherits": "2",
-            "minimatch": "^2.0.1",
-            "once": "^1.3.0"
-          }
-        },
-        "isarray": {
-          "version": "0.0.1",
-          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
-          "dev": true
-        },
-        "minimatch": {
-          "version": "2.0.10",
-          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-2.0.10.tgz",
-          "integrity": "sha1-jQh8OcazjAAbl/ynzm0OHoCvusc=",
-          "dev": true,
-          "requires": {
-            "brace-expansion": "^1.0.0"
-          }
-        },
-        "readable-stream": {
-          "version": "1.0.34",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
-          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
+        "glob-parent": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-3.1.0.tgz",
+          "integrity": "sha1-nmr2KZ2NO9K9QEMIMr0RPfkGxa4=",
           "dev": true,
           "requires": {
-            "core-util-is": "~1.0.0",
-            "inherits": "~2.0.1",
-            "isarray": "0.0.1",
-            "string_decoder": "~0.10.x"
+            "is-glob": "^3.1.0",
+            "path-dirname": "^1.0.0"
           }
         },
-        "string_decoder": {
-          "version": "0.10.31",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-          "dev": true
-        },
-        "through2": {
-          "version": "0.6.5",
-          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
-          "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
+        "to-absolute-glob": {
+          "version": "2.0.2",
+          "resolved": "https://registry.npmjs.org/to-absolute-glob/-/to-absolute-glob-2.0.2.tgz",
+          "integrity": "sha1-GGX0PZ50sIItufFFt4z/fQ98hJs=",
           "dev": true,
           "requires": {
-            "readable-stream": ">=1.0.33-1 <1.1.0-0",
-            "xtend": ">=4.0.0 <4.1.0-0"
+            "is-absolute": "^1.0.0",
+            "is-negated-glob": "^1.0.0"
           }
         }
       }
     },
     "glob-watcher": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/glob-watcher/-/glob-watcher-0.0.6.tgz",
-      "integrity": "sha1-uVtKjfdLOcgymLDAXJeLTZo7cQs=",
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/glob-watcher/-/glob-watcher-5.0.3.tgz",
+      "integrity": "sha512-8tWsULNEPHKQ2MR4zXuzSmqbdyV5PtwwCaWSGQ1WwHsJ07ilNeN1JB8ntxhckbnpSHaf9dXFUHzIWvm1I13dsg==",
       "dev": true,
       "requires": {
-        "gaze": "^0.5.1"
+        "anymatch": "^2.0.0",
+        "async-done": "^1.2.0",
+        "chokidar": "^2.0.0",
+        "is-negated-glob": "^1.0.0",
+        "just-debounce": "^1.0.0",
+        "object.defaults": "^1.1.0"
       }
     },
     "glob2base": {
@@ -5800,58 +5986,6 @@
         }
       }
     },
-    "globule": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/globule/-/globule-0.1.0.tgz",
-      "integrity": "sha1-2cjt3h2nnRJaFRt5UzuXhnY0auU=",
-      "dev": true,
-      "requires": {
-        "glob": "~3.1.21",
-        "lodash": "~1.0.1",
-        "minimatch": "~0.2.11"
-      },
-      "dependencies": {
-        "glob": {
-          "version": "3.1.21",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-3.1.21.tgz",
-          "integrity": "sha1-0p4KBV3qUTj00H7UDomC6DwgZs0=",
-          "dev": true,
-          "requires": {
-            "graceful-fs": "~1.2.0",
-            "inherits": "1",
-            "minimatch": "~0.2.11"
-          }
-        },
-        "graceful-fs": {
-          "version": "1.2.3",
-          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-1.2.3.tgz",
-          "integrity": "sha1-FaSAaldUfLLS2/J/QuiajDRRs2Q=",
-          "dev": true
-        },
-        "inherits": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-1.0.2.tgz",
-          "integrity": "sha1-ykMJ2t7mtUzAuNJH6NfHoJdb3Js=",
-          "dev": true
-        },
-        "lodash": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-1.0.2.tgz",
-          "integrity": "sha1-j1dWDIO1n8JwvT1WG2kAQ0MOJVE=",
-          "dev": true
-        },
-        "minimatch": {
-          "version": "0.2.14",
-          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.2.14.tgz",
-          "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
-          "dev": true,
-          "requires": {
-            "lru-cache": "2",
-            "sigmund": "~1.0.0"
-          }
-        }
-      }
-    },
     "glogg": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/glogg/-/glogg-1.0.1.tgz",
@@ -5939,50 +6073,69 @@
       "dev": true
     },
     "gulp": {
-      "version": "3.9.1",
-      "resolved": "https://registry.npmjs.org/gulp/-/gulp-3.9.1.tgz",
-      "integrity": "sha1-VxzkWSjdQK9lFPxAEYZgFsE4RbQ=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/gulp/-/gulp-4.0.0.tgz",
+      "integrity": "sha1-lXZsYB2t5Kd+0+eyttwDiBtZY2Y=",
       "dev": true,
       "requires": {
-        "archy": "^1.0.0",
-        "chalk": "^1.0.0",
-        "deprecated": "^0.0.1",
-        "gulp-util": "^3.0.0",
-        "interpret": "^1.0.0",
-        "liftoff": "^2.1.0",
-        "minimist": "^1.1.0",
-        "orchestrator": "^0.3.0",
-        "pretty-hrtime": "^1.0.0",
-        "semver": "^4.1.0",
-        "tildify": "^1.0.0",
-        "v8flags": "^2.0.2",
-        "vinyl-fs": "^0.3.0"
+        "glob-watcher": "^5.0.0",
+        "gulp-cli": "^2.0.0",
+        "undertaker": "^1.0.0",
+        "vinyl-fs": "^3.0.0"
       },
       "dependencies": {
-        "ansi-styles": {
-          "version": "2.2.1",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+        "camelcase": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
+          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
           "dev": true
         },
-        "chalk": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+        "gulp-cli": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/gulp-cli/-/gulp-cli-2.1.0.tgz",
+          "integrity": "sha512-txzgdFVlEPShBZus6JJyGyKJoBVDq6Do0ZQgIgx5RAsmhNVTDjymmOxpQvo3c20m66FldilS68ZXj2Q9w5dKbA==",
           "dev": true,
           "requires": {
-            "ansi-styles": "^2.2.1",
-            "escape-string-regexp": "^1.0.2",
-            "has-ansi": "^2.0.0",
-            "strip-ansi": "^3.0.0",
-            "supports-color": "^2.0.0"
+            "ansi-colors": "^1.0.1",
+            "archy": "^1.0.0",
+            "array-sort": "^1.0.0",
+            "color-support": "^1.1.3",
+            "concat-stream": "^1.6.0",
+            "copy-props": "^2.0.1",
+            "fancy-log": "^1.3.2",
+            "gulplog": "^1.0.0",
+            "interpret": "^1.1.0",
+            "isobject": "^3.0.1",
+            "liftoff": "^3.1.0",
+            "matchdep": "^2.0.0",
+            "mute-stdout": "^1.0.0",
+            "pretty-hrtime": "^1.0.0",
+            "replace-homedir": "^1.0.0",
+            "semver-greatest-satisfied-range": "^1.1.0",
+            "v8flags": "^3.0.1",
+            "yargs": "^7.1.0"
           }
         },
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-          "dev": true
+        "yargs": {
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
+          "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+          "dev": true,
+          "requires": {
+            "camelcase": "^3.0.0",
+            "cliui": "^3.2.0",
+            "decamelize": "^1.1.1",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^1.4.0",
+            "read-pkg-up": "^1.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^1.0.2",
+            "which-module": "^1.0.0",
+            "y18n": "^3.2.1",
+            "yargs-parser": "^5.0.0"
+          }
         }
       }
     },
@@ -7407,6 +7560,12 @@
         "xtend": "^4.0.0"
       }
     },
+    "is-negated-glob": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-negated-glob/-/is-negated-glob-1.0.0.tgz",
+      "integrity": "sha1-aRC8pdqMleeEtXUbl2z1oQ/uNtI=",
+      "dev": true
+    },
     "is-npm": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-npm/-/is-npm-1.0.0.tgz",
@@ -9766,6 +9925,12 @@
         "array-includes": "^3.0.3"
       }
     },
+    "just-debounce": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/just-debounce/-/just-debounce-1.0.0.tgz",
+      "integrity": "sha1-h/zPrv/AtozRnVX2cilD+SnqNeo=",
+      "dev": true
+    },
     "kind-of": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
@@ -9784,6 +9949,16 @@
       "integrity": "sha1-o9E1u/xg7oxurPL35+by1HVeSaQ=",
       "dev": true
     },
+    "last-run": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/last-run/-/last-run-1.1.1.tgz",
+      "integrity": "sha1-RblpQsF7HHnHchmCWbqUO+v4yls=",
+      "dev": true,
+      "requires": {
+        "default-resolution": "^2.0.0",
+        "es6-weak-map": "^2.0.1"
+      }
+    },
     "latest-version": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/latest-version/-/latest-version-3.1.0.tgz",
@@ -9820,6 +9995,15 @@
         "invert-kv": "^1.0.0"
       }
     },
+    "lead": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/lead/-/lead-1.0.0.tgz",
+      "integrity": "sha1-bxT5mje+Op3XhPVJVpDlkDRm7kI=",
+      "dev": true,
+      "requires": {
+        "flush-write-stream": "^1.0.2"
+      }
+    },
     "left-pad": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz",
@@ -9843,13 +10027,13 @@
       }
     },
     "liftoff": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/liftoff/-/liftoff-2.5.0.tgz",
-      "integrity": "sha1-IAkpG7Mc6oYbvxCnwVooyvdcMew=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/liftoff/-/liftoff-3.1.0.tgz",
+      "integrity": "sha512-DlIPlJUkCV0Ips2zf2pJP0unEoT1kwYhiiPUGF3s/jtxTCjziNLoiVVh+jqWOWeFi6mmwQ5fNxvAUyPad4Dfog==",
       "dev": true,
       "requires": {
         "extend": "^3.0.0",
-        "findup-sync": "^2.0.0",
+        "findup-sync": "^3.0.0",
         "fined": "^1.0.1",
         "flagged-respawn": "^1.0.0",
         "is-plain-object": "^2.0.4",
@@ -10276,12 +10460,6 @@
       "integrity": "sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==",
       "dev": true
     },
-    "lru-cache": {
-      "version": "2.7.3",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
-      "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
-      "dev": true
-    },
     "make-dir": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-1.1.0.tgz",
@@ -10394,6 +10572,41 @@
       "integrity": "sha512-ea2eGWOqNxPcXv8dyERdSr/6FmzvWwzjMxpfGB/sbMccXoct+xY+YukPD+QTUZwyvK7BZwcr4m21WBOW41pAkg==",
       "dev": true
     },
+    "matchdep": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/matchdep/-/matchdep-2.0.0.tgz",
+      "integrity": "sha1-xvNINKDY28OzfCfui7yyfHd1WC4=",
+      "dev": true,
+      "requires": {
+        "findup-sync": "^2.0.0",
+        "micromatch": "^3.0.4",
+        "resolve": "^1.4.0",
+        "stack-trace": "0.0.10"
+      },
+      "dependencies": {
+        "findup-sync": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/findup-sync/-/findup-sync-2.0.0.tgz",
+          "integrity": "sha1-kyaxSIwi0aYIhlCoaQGy2akKLLw=",
+          "dev": true,
+          "requires": {
+            "detect-file": "^1.0.0",
+            "is-glob": "^3.1.0",
+            "micromatch": "^3.0.4",
+            "resolve-dir": "^1.0.1"
+          }
+        },
+        "resolve": {
+          "version": "1.10.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.10.0.tgz",
+          "integrity": "sha512-3sUr9aq5OfSg2S9pNtPA9hL1FVEAjvfOC4leW0SNf/mpnaakz2a9femSd6LqAww2RaFctwyf1lCqnTHuF1rxDg==",
+          "dev": true,
+          "requires": {
+            "path-parse": "^1.0.6"
+          }
+        }
+      }
+    },
     "math-expression-evaluator": {
       "version": "1.2.17",
       "resolved": "https://registry.npmjs.org/math-expression-evaluator/-/math-expression-evaluator-1.2.17.tgz",
@@ -10702,6 +10915,12 @@
         "duplexer2": "0.0.2"
       }
     },
+    "mute-stdout": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/mute-stdout/-/mute-stdout-1.0.1.tgz",
+      "integrity": "sha512-kDcwXR4PS7caBpuRYYBUz9iVixUk3anO3f5OYFiIPwK/20vCzKCHyKoulbiDY1S53zD2bxUpxN/IJ+TnXjfvxg==",
+      "dev": true
+    },
     "mute-stream": {
       "version": "0.0.7",
       "resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.7.tgz",
@@ -10770,12 +10989,6 @@
         }
       }
     },
-    "natives": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/natives/-/natives-1.1.6.tgz",
-      "integrity": "sha512-6+TDFewD4yxY14ptjKaS63GVdtKiES1pTPyxn9Jb0rBqPMZ7VcCiooEhPNsr+mqHtMGxa/5c/HhcC4uPEUw/nA==",
-      "dev": true
-    },
     "natural-compare": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz",
@@ -11770,6 +11983,15 @@
       "integrity": "sha512-U+JJi7duF1o+u2pynbp2zXDW2/PADgC30f0GsHZtRh+HOcXHnw137TrNlyxxRvWW5fjKd3bcLHPxofWuCjaeZg==",
       "dev": true
     },
+    "now-and-later": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/now-and-later/-/now-and-later-2.0.1.tgz",
+      "integrity": "sha512-KGvQ0cB70AQfg107Xvs/Fbu+dGmZoTRJp2TaPwcwQm3/7PteUyN2BCgk8KBMPGBUXZdVwyWS8fDCGFygBm19UQ==",
+      "dev": true,
+      "requires": {
+        "once": "^1.3.2"
+      }
+    },
     "npm-run-path": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -11949,6 +12171,26 @@
         "isobject": "^3.0.0"
       }
     },
+    "object.assign": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/object.assign/-/object.assign-4.1.0.tgz",
+      "integrity": "sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "function-bind": "^1.1.1",
+        "has-symbols": "^1.0.0",
+        "object-keys": "^1.0.11"
+      },
+      "dependencies": {
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==",
+          "dev": true
+        }
+      }
+    },
     "object.defaults": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/object.defaults/-/object.defaults-1.1.0.tgz",
@@ -12011,6 +12253,16 @@
         "isobject": "^3.0.1"
       }
     },
+    "object.reduce": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/object.reduce/-/object.reduce-1.0.1.tgz",
+      "integrity": "sha1-b+NI8qx/oPlcpiEiZZkJaCW7A60=",
+      "dev": true,
+      "requires": {
+        "for-own": "^1.0.0",
+        "make-iterator": "^1.0.0"
+      }
+    },
     "object.values": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/object.values/-/object.values-1.1.0.tgz",
@@ -12156,49 +12408,21 @@
       "dev": true,
       "requires": {
         "deep-is": "~0.1.3",
-        "fast-levenshtein": "~2.0.4",
-        "levn": "~0.3.0",
-        "prelude-ls": "~1.1.2",
-        "type-check": "~0.3.2",
-        "wordwrap": "~1.0.0"
-      }
-    },
-    "orchestrator": {
-      "version": "0.3.8",
-      "resolved": "https://registry.npmjs.org/orchestrator/-/orchestrator-0.3.8.tgz",
-      "integrity": "sha1-FOfp4nZPcxX7rBhOUGx6pt+UrX4=",
-      "dev": true,
-      "requires": {
-        "end-of-stream": "~0.1.5",
-        "sequencify": "~0.0.7",
-        "stream-consume": "~0.1.0"
-      },
-      "dependencies": {
-        "end-of-stream": {
-          "version": "0.1.5",
-          "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-0.1.5.tgz",
-          "integrity": "sha1-jhdyBsPICDfYVjLouTWd/osvbq8=",
-          "dev": true,
-          "requires": {
-            "once": "~1.3.0"
-          }
-        },
-        "once": {
-          "version": "1.3.3",
-          "resolved": "https://registry.npmjs.org/once/-/once-1.3.3.tgz",
-          "integrity": "sha1-suJhVXzkwxTsgwTz+oJmPkKXyiA=",
-          "dev": true,
-          "requires": {
-            "wrappy": "1"
-          }
-        }
+        "fast-levenshtein": "~2.0.4",
+        "levn": "~0.3.0",
+        "prelude-ls": "~1.1.2",
+        "type-check": "~0.3.2",
+        "wordwrap": "~1.0.0"
       }
     },
     "ordered-read-streams": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/ordered-read-streams/-/ordered-read-streams-0.1.0.tgz",
-      "integrity": "sha1-/VZamvjrRHO6abbtijQ1LLVS8SY=",
-      "dev": true
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/ordered-read-streams/-/ordered-read-streams-1.0.1.tgz",
+      "integrity": "sha1-d8DLN8QVJdZBZtmQ/61+xqDhNj4=",
+      "dev": true,
+      "requires": {
+        "readable-stream": "^2.0.1"
+      }
     },
     "os-homedir": {
       "version": "1.0.2",
@@ -14060,6 +14284,41 @@
         "once": "^1.3.1"
       }
     },
+    "pumpify": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/pumpify/-/pumpify-1.5.1.tgz",
+      "integrity": "sha512-oClZI37HvuUJJxSKKrC17bZ9Cu0ZYhEAGPsPUy9KlMUmv9dKX2o77RUmq7f3XjIxbwyGwYzbzQ1L2Ks8sIradQ==",
+      "dev": true,
+      "requires": {
+        "duplexify": "^3.6.0",
+        "inherits": "^2.0.3",
+        "pump": "^2.0.0"
+      },
+      "dependencies": {
+        "duplexify": {
+          "version": "3.7.1",
+          "resolved": "https://registry.npmjs.org/duplexify/-/duplexify-3.7.1.tgz",
+          "integrity": "sha512-07z8uv2wMyS51kKhD1KsdXJg5WQ6t93RneqRxUHnskXVtlYYkLqM0gqStQZ3pj073g687jPCHrqNfCzawLYh5g==",
+          "dev": true,
+          "requires": {
+            "end-of-stream": "^1.0.0",
+            "inherits": "^2.0.1",
+            "readable-stream": "^2.0.0",
+            "stream-shift": "^1.0.0"
+          }
+        },
+        "pump": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/pump/-/pump-2.0.1.tgz",
+          "integrity": "sha512-ruPMNRkN3MHP1cWJc9OWr+T/xDP0jhXYCLfJcBuX54hhfIBnaQmAUMfDcG4DM5UMWByBbJY69QSphm3jtDKIkA==",
+          "dev": true,
+          "requires": {
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
+          }
+        }
+      }
+    },
     "punycode": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
@@ -14234,7 +14493,6 @@
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-2.2.1.tgz",
       "integrity": "sha512-1JU/8q+VgFZyxwrJ+SVIOsh+KywWGpds3NTqikiKpDMZWScmAYyKIgqkO+ARvNWJfXeXR1zxz7aHF4u4CyH6vQ==",
       "dev": true,
-      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.11",
         "micromatch": "^3.1.10",
@@ -14388,6 +14646,27 @@
       "integrity": "sha1-VNvzd+UUQKypCkzSdGANP/LYiKk=",
       "dev": true
     },
+    "remove-bom-buffer": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/remove-bom-buffer/-/remove-bom-buffer-3.0.0.tgz",
+      "integrity": "sha512-8v2rWhaakv18qcvNeli2mZ/TMTL2nEyAKRvzo1WtnZBl15SHyEhrCu2/xKlJyUFKHiHgfXIyuY6g2dObJJycXQ==",
+      "dev": true,
+      "requires": {
+        "is-buffer": "^1.1.5",
+        "is-utf8": "^0.2.1"
+      }
+    },
+    "remove-bom-stream": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/remove-bom-stream/-/remove-bom-stream-1.2.0.tgz",
+      "integrity": "sha1-BfGlk/FuQuH7kOv1nejlaVJflSM=",
+      "dev": true,
+      "requires": {
+        "remove-bom-buffer": "^3.0.0",
+        "safe-buffer": "^5.1.0",
+        "through2": "^2.0.3"
+      }
+    },
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
@@ -14421,6 +14700,17 @@
       "integrity": "sha1-KbvZIHinOfC8zitO5B6DeVNSKSQ=",
       "dev": true
     },
+    "replace-homedir": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/replace-homedir/-/replace-homedir-1.0.0.tgz",
+      "integrity": "sha1-6H9tUTuSjd6AgmDBK+f+xv9ueYw=",
+      "dev": true,
+      "requires": {
+        "homedir-polyfill": "^1.0.1",
+        "is-absolute": "^1.0.0",
+        "remove-trailing-separator": "^1.1.0"
+      }
+    },
     "request": {
       "version": "2.88.0",
       "resolved": "https://registry.npmjs.org/request/-/request-2.88.0.tgz",
@@ -14568,6 +14858,15 @@
       "integrity": "sha1-Jsv+k10a7uq7Kbw/5a6wHpPUQiY=",
       "dev": true
     },
+    "resolve-options": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/resolve-options/-/resolve-options-1.1.0.tgz",
+      "integrity": "sha1-MrueOcBtZzONyTeMDW1gdFZq0TE=",
+      "dev": true,
+      "requires": {
+        "value-or-function": "^3.0.0"
+      }
+    },
     "resolve-url": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/resolve-url/-/resolve-url-0.2.1.tgz",
@@ -14648,38 +14947,6 @@
       "integrity": "sha512-DEqnSRTDw/Tc3FXf49zedI638Z9onwUotBMiUFKmrO2sdFKIbXamXGQ3Axd4qgphxKB4kw/qP1w5kTxnfU1B9Q==",
       "dev": true
     },
-    "run-sequence": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/run-sequence/-/run-sequence-2.2.1.tgz",
-      "integrity": "sha512-qkzZnQWMZjcKbh3CNly2srtrkaO/2H/SI5f2eliMCapdRD3UhMrwjfOAZJAnZ2H8Ju4aBzFZkBGXUqFs9V0yxw==",
-      "dev": true,
-      "requires": {
-        "chalk": "^1.1.3",
-        "fancy-log": "^1.3.2",
-        "plugin-error": "^0.1.2"
-      },
-      "dependencies": {
-        "ansi-styles": {
-          "version": "2.2.1",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-          "dev": true
-        },
-        "chalk": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^2.2.1",
-            "escape-string-regexp": "^1.0.2",
-            "has-ansi": "^2.0.0",
-            "strip-ansi": "^3.0.0",
-            "supports-color": "^2.0.0"
-          }
-        }
-      }
-    },
     "rx-lite": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-3.1.2.tgz",
@@ -15784,6 +16051,15 @@
         }
       }
     },
+    "semver-greatest-satisfied-range": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/semver-greatest-satisfied-range/-/semver-greatest-satisfied-range-1.1.0.tgz",
+      "integrity": "sha1-E+jCZYq5aRywzXEJMkAoDTb3els=",
+      "dev": true,
+      "requires": {
+        "sver-compat": "^1.5.0"
+      }
+    },
     "semver-regex": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/semver-regex/-/semver-regex-1.0.0.tgz",
@@ -15811,12 +16087,6 @@
         "statuses": "~1.4.0"
       }
     },
-    "sequencify": {
-      "version": "0.0.7",
-      "resolved": "https://registry.npmjs.org/sequencify/-/sequencify-0.0.7.tgz",
-      "integrity": "sha1-kM/xnQLgcCf9dn9erT57ldHnOAw=",
-      "dev": true
-    },
     "serve-static": {
       "version": "1.13.2",
       "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
@@ -15889,12 +16159,6 @@
       "integrity": "sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==",
       "dev": true
     },
-    "sigmund": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
-      "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
-      "dev": true
-    },
     "signal-exit": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
@@ -16191,6 +16455,12 @@
       "integrity": "sha512-ji9qxRnOVfcuLDySj9qzhGSEFVobyt1kIOSkj1qZzYLzq7Tos/oUUWvotUPQLlrsidqsK6tBH89Bc9kL5zHA6w==",
       "dev": true
     },
+    "stack-trace": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.10.tgz",
+      "integrity": "sha1-VHxws0fo0ytOEI6hoqFZ5f3eGcA=",
+      "dev": true
+    },
     "stack-utils": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-1.0.2.tgz",
@@ -16656,10 +16926,10 @@
       "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=",
       "dev": true
     },
-    "stream-consume": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/stream-consume/-/stream-consume-0.1.1.tgz",
-      "integrity": "sha512-tNa3hzgkjEP7XbCkbRXe1jpg+ievoa0O4SCFlMOYEscGSS4JJsckGL8swUyAa/ApGU3Ae4t6Honor4HhL+tRyg==",
+    "stream-exhaust": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/stream-exhaust/-/stream-exhaust-1.0.2.tgz",
+      "integrity": "sha512-b/qaq/GlBK5xaq1yrK9/zFcyRSTNxmcZwFLGSTG0mXgZl/4Z6GgiyYOXOvY7N3eEvFRAG1bkDRz5EPGSvPYQlw==",
       "dev": true
     },
     "stream-shift": {
@@ -16814,6 +17084,16 @@
       "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
       "dev": true
     },
+    "sver-compat": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/sver-compat/-/sver-compat-1.5.0.tgz",
+      "integrity": "sha1-PPh9/rTQe0o/FIJ7wYaz/QxkXNg=",
+      "dev": true,
+      "requires": {
+        "es6-iterator": "^2.0.1",
+        "es6-symbol": "^3.1.1"
+      }
+    },
     "svgo": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/svgo/-/svgo-1.2.1.tgz",
@@ -17416,6 +17696,15 @@
         "repeat-string": "^1.6.1"
       }
     },
+    "to-through": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/to-through/-/to-through-2.0.0.tgz",
+      "integrity": "sha1-/JKtq6ByZHvAtn1rA2ZKoZUJOvY=",
+      "dev": true,
+      "requires": {
+        "through2": "^2.0.3"
+      }
+    },
     "touch": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz",
@@ -17566,6 +17855,29 @@
         "debug": "^2.2.0"
       }
     },
+    "undertaker": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/undertaker/-/undertaker-1.2.1.tgz",
+      "integrity": "sha512-71WxIzDkgYk9ZS+spIB8iZXchFhAdEo2YU8xYqBYJ39DIUIqziK78ftm26eecoIY49X0J2MLhG4hr18Yp6/CMA==",
+      "dev": true,
+      "requires": {
+        "arr-flatten": "^1.0.1",
+        "arr-map": "^2.0.0",
+        "bach": "^1.0.0",
+        "collection-map": "^1.0.0",
+        "es6-weak-map": "^2.0.1",
+        "last-run": "^1.1.0",
+        "object.defaults": "^1.0.0",
+        "object.reduce": "^1.0.0",
+        "undertaker-registry": "^1.0.0"
+      }
+    },
+    "undertaker-registry": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/undertaker-registry/-/undertaker-registry-1.0.1.tgz",
+      "integrity": "sha1-XkvaMI5KiirlhPm5pDWaSZglzFA=",
+      "dev": true
+    },
     "union-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
@@ -17605,10 +17917,26 @@
       "dev": true
     },
     "unique-stream": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-1.0.0.tgz",
-      "integrity": "sha1-1ZpKdUJ0R9mqbJHnAmP40mpLEEs=",
-      "dev": true
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-2.3.1.tgz",
+      "integrity": "sha512-2nY4TnBE70yoxHkDli7DMazpWiP7xMdCYqU2nBRO0UB+ZpEkGsSija7MvmvnZFUeC+mrgiUfcHSr3LmRFIg4+A==",
+      "dev": true,
+      "requires": {
+        "json-stable-stringify-without-jsonify": "^1.0.1",
+        "through2-filter": "^3.0.0"
+      },
+      "dependencies": {
+        "through2-filter": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/through2-filter/-/through2-filter-3.0.0.tgz",
+          "integrity": "sha512-jaRjI2WxN3W1V8/FMZ9HKIBXixtiqs3SQSX4/YGIiP3gL6djW48VoZq9tDqeCWs3MT8YY5wb/zli8VW8snY1CA==",
+          "dev": true,
+          "requires": {
+            "through2": "~2.0.0",
+            "xtend": "~4.0.0"
+          }
+        }
+      }
     },
     "unique-string": {
       "version": "1.0.0",
@@ -17687,8 +18015,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.2.tgz",
       "integrity": "sha512-kXpym8nmDmlCBr7nKdIx8P2jNBa+pBpIUFRnKJ4dr8htyYGJFokkr2ZvERRtUN+9SY+JqXouNgUPtv6JQva/2Q==",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "update-notifier": {
       "version": "2.5.0",
@@ -17825,12 +18152,6 @@
         }
       }
     },
-    "user-home": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
-      "integrity": "sha1-K1viOjK2Onyd640PKNSFcko98ZA=",
-      "dev": true
-    },
     "util": {
       "version": "0.10.4",
       "resolved": "https://registry.npmjs.org/util/-/util-0.10.4.tgz",
@@ -17875,12 +18196,12 @@
       "dev": true
     },
     "v8flags": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-2.1.1.tgz",
-      "integrity": "sha1-qrGh+jDUX4jdMhFIh1rALAtV5bQ=",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.2.tgz",
+      "integrity": "sha512-MtivA7GF24yMPte9Rp/BWGCYQNaUj86zeYxV/x2RRJMKagImbbv3u8iJC57lNhWLPcGLJmHcHmFWkNsplbbLWw==",
       "dev": true,
       "requires": {
-        "user-home": "^1.1.1"
+        "homedir-polyfill": "^1.0.1"
       }
     },
     "vali-date": {
@@ -17905,6 +18226,12 @@
       "integrity": "sha512-X/p3UZerAIsbBfN/IwahhYaBbY68EN/UQBWHtsbXGT5bfrH/p4NQzUCG1kF/rtKaNpnJ7jAu6NGTdSNtyNIXMw==",
       "dev": true
     },
+    "value-or-function": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/value-or-function/-/value-or-function-3.0.0.tgz",
+      "integrity": "sha1-HCQ6ULWVwb5Up1S/7OhWO5/42BM=",
+      "dev": true
+    },
     "vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
@@ -17940,88 +18267,66 @@
       }
     },
     "vinyl-fs": {
-      "version": "0.3.14",
-      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-0.3.14.tgz",
-      "integrity": "sha1-mmhRzhysHBzqX+hsCTHWIMLPqeY=",
-      "dev": true,
-      "requires": {
-        "defaults": "^1.0.0",
-        "glob-stream": "^3.1.5",
-        "glob-watcher": "^0.0.6",
-        "graceful-fs": "^3.0.0",
-        "mkdirp": "^0.5.0",
-        "strip-bom": "^1.0.0",
-        "through2": "^0.6.1",
-        "vinyl": "^0.4.0"
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-3.0.3.tgz",
+      "integrity": "sha512-vIu34EkyNyJxmP0jscNzWBSygh7VWhqun6RmqVfXePrOwi9lhvRs//dOaGOTRUQr4tx7/zd26Tk5WeSVZitgng==",
+      "dev": true,
+      "requires": {
+        "fs-mkdirp-stream": "^1.0.0",
+        "glob-stream": "^6.1.0",
+        "graceful-fs": "^4.0.0",
+        "is-valid-glob": "^1.0.0",
+        "lazystream": "^1.0.0",
+        "lead": "^1.0.0",
+        "object.assign": "^4.0.4",
+        "pumpify": "^1.3.5",
+        "readable-stream": "^2.3.3",
+        "remove-bom-buffer": "^3.0.0",
+        "remove-bom-stream": "^1.2.0",
+        "resolve-options": "^1.1.0",
+        "through2": "^2.0.0",
+        "to-through": "^2.0.0",
+        "value-or-function": "^3.0.0",
+        "vinyl": "^2.0.0",
+        "vinyl-sourcemap": "^1.1.0"
       },
       "dependencies": {
         "clone": {
-          "version": "0.2.0",
-          "resolved": "https://registry.npmjs.org/clone/-/clone-0.2.0.tgz",
-          "integrity": "sha1-xhJqkK1Pctv1rNskPMN3JP6T/B8=",
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
           "dev": true
         },
-        "graceful-fs": {
-          "version": "3.0.11",
-          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-3.0.11.tgz",
-          "integrity": "sha1-dhPHeKGv6mLyXGMKCG1/Osu92Bg=",
-          "dev": true,
-          "requires": {
-            "natives": "^1.1.0"
-          }
-        },
-        "isarray": {
-          "version": "0.0.1",
-          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
+        "clone-stats": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
+          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
           "dev": true
         },
-        "readable-stream": {
-          "version": "1.0.34",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
-          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
-          "dev": true,
-          "requires": {
-            "core-util-is": "~1.0.0",
-            "inherits": "~2.0.1",
-            "isarray": "0.0.1",
-            "string_decoder": "~0.10.x"
-          }
-        },
-        "string_decoder": {
-          "version": "0.10.31",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+        "is-valid-glob": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-valid-glob/-/is-valid-glob-1.0.0.tgz",
+          "integrity": "sha1-Kb8+/3Ab4tTTFdusw5vDn+j2Aao=",
           "dev": true
         },
-        "strip-bom": {
+        "replace-ext": {
           "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-1.0.0.tgz",
-          "integrity": "sha1-hbiGLzhEtabV7IRnqTWYFzo295Q=",
-          "dev": true,
-          "requires": {
-            "first-chunk-stream": "^1.0.0",
-            "is-utf8": "^0.2.0"
-          }
-        },
-        "through2": {
-          "version": "0.6.5",
-          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
-          "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
-          "dev": true,
-          "requires": {
-            "readable-stream": ">=1.0.33-1 <1.1.0-0",
-            "xtend": ">=4.0.0 <4.1.0-0"
-          }
+          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
+          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs=",
+          "dev": true
         },
         "vinyl": {
-          "version": "0.4.6",
-          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.4.6.tgz",
-          "integrity": "sha1-LzVsh6VQolVGHza76ypbqL94SEc=",
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.2.0.tgz",
+          "integrity": "sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==",
           "dev": true,
           "requires": {
-            "clone": "^0.2.0",
-            "clone-stats": "^0.0.1"
+            "clone": "^2.1.1",
+            "clone-buffer": "^1.0.0",
+            "clone-stats": "^1.0.0",
+            "cloneable-readable": "^1.0.0",
+            "remove-trailing-separator": "^1.0.1",
+            "replace-ext": "^1.0.0"
           }
         }
       }
@@ -18063,6 +18368,55 @@
         }
       }
     },
+    "vinyl-sourcemap": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/vinyl-sourcemap/-/vinyl-sourcemap-1.1.0.tgz",
+      "integrity": "sha1-kqgAWTo4cDqM2xHYswCtS+Y7PhY=",
+      "dev": true,
+      "requires": {
+        "append-buffer": "^1.0.2",
+        "convert-source-map": "^1.5.0",
+        "graceful-fs": "^4.1.6",
+        "normalize-path": "^2.1.1",
+        "now-and-later": "^2.0.0",
+        "remove-bom-buffer": "^3.0.0",
+        "vinyl": "^2.0.0"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
+          "dev": true
+        },
+        "clone-stats": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
+          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
+          "dev": true
+        },
+        "replace-ext": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
+          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs=",
+          "dev": true
+        },
+        "vinyl": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.2.0.tgz",
+          "integrity": "sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==",
+          "dev": true,
+          "requires": {
+            "clone": "^2.1.1",
+            "clone-buffer": "^1.0.0",
+            "clone-stats": "^1.0.0",
+            "cloneable-readable": "^1.0.0",
+            "remove-trailing-separator": "^1.0.1",
+            "replace-ext": "^1.0.0"
+          }
+        }
+      }
+    },
     "vinyl-sourcemaps-apply": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz",
diff --git a/package.json b/package.json
index b0b72954f3..6c7c7c946c 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "govuk-elements-sass": "3.1.3",
     "govuk_frontend_toolkit": "8.1.0",
     "govuk_template_jinja": "0.25.0",
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.0",
     "gulp-better-rollup": "3.1.0",
     "gulp-changed": "^3.2.0",
     "gulp-data": "^1.3.1",
@@ -68,7 +68,6 @@
     "puppeteer": "^1.14.0",
     "recursive-readdir": "^2.2.2",
     "request": "^2.88.0",
-    "run-sequence": "^2.2.1",
     "sass-color-helpers": "^2.1.1",
     "sassdoc": "^2.6.0",
     "standard": "^12.0.1",
diff --git a/tasks/gulp/clean.js b/tasks/gulp/clean.js
index 82b8994e1c..0df9cc817c 100644
--- a/tasks/gulp/clean.js
+++ b/tasks/gulp/clean.js
@@ -13,7 +13,7 @@ gulp.task('clean', () => {
   let destination = taskArguments.destination
 
   if (destination === 'package') {
-    return del.sync([
+    return del([
       `${destination}/**`,
       `!${destination}`,
       `!${destination}/package.json`,
@@ -21,7 +21,7 @@ gulp.task('clean', () => {
       `!${destination}/README.md`
     ])
   } else {
-    return del.sync([
+    return del([
       `${destination}/**/*`
     ])
   }
diff --git a/tasks/gulp/compile-assets.js b/tasks/gulp/compile-assets.js
index c590ba7598..85619aebd9 100644
--- a/tasks/gulp/compile-assets.js
+++ b/tasks/gulp/compile-assets.js
@@ -143,8 +143,8 @@ gulp.task('js:compile', () => {
   // for dist/ folder we only want compiled 'all.js' file
   let srcFiles = isDist ? configPaths.src + 'all.js' : configPaths.src + '**/*.js'
   return gulp.src([
-    '!' + configPaths.src + '**/*.test.js',
-    srcFiles
+    srcFiles,
+    '!' + configPaths.src + '**/*.test.js'
   ])
     .pipe(rollup({
       // Used to set the `window` global and UMD/AMD export name.
diff --git a/tasks/gulp/nodemon.js b/tasks/gulp/nodemon.js
new file mode 100644
index 0000000000..90ff445c73
--- /dev/null
+++ b/tasks/gulp/nodemon.js
@@ -0,0 +1,13 @@
+'use strict'
+const gulp = require('gulp')
+const nodemon = require('nodemon')
+
+// Nodemon task --------------------------
+// Restarts node app for changes affecting
+// js and json files
+// ---------------------------------------
+gulp.task('nodemon', () => {
+  return nodemon({
+    script: 'app/start.js'
+  })
+})
diff --git a/tasks/gulp/watch.js b/tasks/gulp/watch.js
index de6e69a961..e9df9cf7be 100644
--- a/tasks/gulp/watch.js
+++ b/tasks/gulp/watch.js
@@ -6,6 +6,6 @@ const configPaths = require('../../config/paths.json')
 // When a file is changed, re-run the build task.
 // ---------------------------------------
 gulp.task('watch', () => {
-  gulp.watch([configPaths.src + '**/**/*.scss', configPaths.app + 'assets/scss/**/*.scss'], ['styles', 'sassdoc'])
-  gulp.watch([configPaths.src + '**/**/*.js'], ['scripts'])
+  gulp.watch([configPaths.src + '**/**/*.scss', configPaths.app + 'assets/scss/**/*.scss'], gulp.parallel('styles', 'sassdoc'))
+  gulp.watch([configPaths.src + '**/**/*.js'], gulp.task('scripts'))
 })