fixed dependencies until further actions are needed

package.json

@@ -120,19 +120,19 @@
     "url": "https://github.com/WebReflection/hyperhtml/issues"
   },
   "devDependencies": {
-    "@babel/core": "^7.10.3",
-    "@babel/preset-env": "^7.10.3",
-    "ascjs": "^4.0.1",
-    "basichtml": "^2.3.0",
-    "coveralls": "^3.1.0",
-    "drop-babel-typeof": "^1.0.3",
-    "istanbul": "^0.4.5",
-    "npm-dollar": "^2.2.1",
-    "rollup": "^2.18.1",
-    "rollup-plugin-babel": "^4.4.0",
-    "rollup-plugin-node-resolve": "^5.2.0",
-    "tressa": "^0.3.1",
-    "uglify-js": "^3.10.0"
+    "@babel/core": "7.10.3",
+    "@babel/preset-env": "7.10.3",
+    "ascjs": "4.0.1",
+    "basichtml": "2.3.0",
+    "coveralls": "3.1.0",
+    "drop-babel-typeof": "1.0.3",
+    "istanbul": "0.4.5",
+    "npm-dollar": "2.2.1",
+    "rollup": "2.18.1",
+    "rollup-plugin-babel": "4.4.0",
+    "rollup-plugin-node-resolve": "5.2.0",
+    "tressa": "0.3.1",
+    "uglify-js": "3.10.0"
   },
   "greenkeeper": {
     "ignore": [
@@ -143,18 +143,18 @@
     ]
   },
   "dependencies": {
-    "@ungap/create-content": "^0.2.0",
-    "@ungap/custom-event": "^0.3.1",
-    "@ungap/essential-map": "^0.3.2",
-    "@ungap/essential-weakset": "^0.2.1",
-    "@ungap/is-array": "^0.2.0",
-    "@ungap/template-tag-arguments": "^0.5.0",
-    "@ungap/weakmap": "^0.2.1",
-    "disconnected": "^0.2.1",
-    "domdiff": "^2.2.2",
-    "domtagger": "^0.7.0",
-    "hyperhtml-style": "^0.1.2",
-    "hyperhtml-wire": "^2.1.1"
+    "@ungap/create-content": "0.2.0",
+    "@ungap/custom-event": "0.3.1",
+    "@ungap/essential-map": "0.3.2",
+    "@ungap/essential-weakset": "0.2.1",
+    "@ungap/is-array": "0.2.0",
+    "@ungap/template-tag-arguments": "0.5.0",
+    "@ungap/weakmap": "0.2.1",
+    "disconnected": "0.2.1",
+    "domdiff": "2.2.2",
+    "domtagger": "0.7.0",
+    "hyperhtml-style": "0.1.2",
+    "hyperhtml-wire": "2.1.1"
   },
   "collective": {
     "type": "opencollective",