diff --git a/package-lock.json b/package-lock.json
index 6b0e524..fe185cf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1220,6 +1220,7 @@
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       "dev": true,
+      "optional": true,
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         "readable-stream": "^2.0.6"
@@ -2441,7 +2442,8 @@
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       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -2843,7 +2845,8 @@
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       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3931,7 +3934,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.2.0",
@@ -3952,12 +3956,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
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@@ -3972,17 +3978,20 @@
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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@@ -4099,7 +4108,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4111,6 +4121,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4125,6 +4136,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4132,12 +4144,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "yallist": "^3.0.0"
@@ -4156,6 +4170,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4236,7 +4251,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "4.1.1",
@@ -4248,6 +4264,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4333,7 +4350,8 @@
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           "version": "5.1.2",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4369,6 +4387,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4388,6 +4407,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4431,12 +4451,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4445,6 +4467,7 @@
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       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
+      "optional": true,
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@@ -4457,6 +4480,7 @@
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       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
       "dev": true,
+      "optional": true,
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@@ -4494,7 +4518,8 @@
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       "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -4719,7 +4744,8 @@
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       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
       "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -5466,7 +5492,8 @@
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       "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -6141,6 +6168,7 @@
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       "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
       "dev": true,
+      "optional": true,
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@@ -6153,7 +6181,8 @@
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           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -6185,9 +6214,9 @@
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-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
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@@ -6428,7 +6457,8 @@
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       "integrity": "sha1-2TPOuSBdgr3PSIb2dCvcK03qFG0=",
-      "dev": true
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+      "optional": true
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@@ -7066,6 +7096,7 @@
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       "dev": true,
+      "optional": true,
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         "console-control-strings": "~1.1.0",
@@ -8157,6 +8188,7 @@
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       "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -8168,6 +8200,7 @@
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           "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
           "dev": true,
+          "optional": true,
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             "pify": "^2.0.0",
@@ -8178,7 +8211,8 @@
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           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -8187,6 +8221,7 @@
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       "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
       "dev": true,
+      "optional": true,
       "requires": {
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         "read-pkg": "^1.0.0"
@@ -8197,6 +8232,7 @@
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           "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
+          "optional": true,
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@@ -8207,6 +8243,7 @@
           "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-2.1.0.tgz",
           "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
           "dev": true,
+          "optional": true,
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@@ -9497,6 +9534,7 @@
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       "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
       "dev": true,
+      "optional": true,
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@@ -10827,6 +10865,7 @@
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       "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "string-width": "^1.0.2 || 2"
       }