Update dependencies

Author: jhildenbiddle

package-lock.json

@@ -64,7 +64,7 @@
     "version": "npm run build && npm test && git add -A dist"
   },
   "devDependencies": {
-    "@babel/core": "^7.2.0",
+    "@babel/core": "^7.2.2",
     "@babel/polyfill": "^7.0.0",
     "@babel/preset-env": "^7.2.0",
     "@webcomponents/webcomponentsjs": "^2.2.1",
@@ -80,7 +80,7 @@
     "eslint-plugin-chai-expect": "^2.0.1",
     "eslint-plugin-mocha": "^5.2.0",
     "get-css-data": "^1.6.1",
-    "karma": "^3.1.3",
+    "karma": "3.1.1",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^1.1.2",
@@ -91,9 +91,9 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^3.0.5",
     "lodash.merge": "^4.6.1",
-    "mocha": "^4.1.0",
+    "mocha": "4.1.0",
     "rimraf": "^2.6.2",
-    "rollup": "^0.67.4",
+    "rollup": "^0.68.0",
     "rollup-plugin-babel": "^4.1.0",
     "rollup-plugin-commonjs": "^9.2.0",
     "rollup-plugin-eslint": "^5.0.0",