Rev to latest webcomponents

Author: Steven Orvell

package-lock.json

@@ -23,8 +23,8 @@
   "devDependencies": {
     "@types/chai": "^4.0.1",
     "@types/mocha": "^5.2.4",
-    "@webcomponents/webcomponentsjs": "^2.1.1",
-    "@webcomponents/shadycss": "^1.5.1",
+    "@webcomponents/shadycss": "^1.5.2",
+    "@webcomponents/webcomponentsjs": "^2.1.2",
     "chai": "^4.0.2",
     "mocha": "^5.0.5",
     "rollup": "^0.64.1",