[ci skip] Point to latest polymer 2.0 versions.

bower.json

@@ -24,27 +24,27 @@
   "homepage": "https://github.com/PolymerElements/paper-item",
   "ignore": [],
   "dependencies": {
-    "polymer": "Polymer/polymer#^2.0.0-rc.1",
-    "paper-styles": "PolymerElements/paper-styles#2.0-preview",
-    "iron-flex-layout": "PolymerElements/iron-flex-layout#2.0-preview",
-    "iron-behaviors": "PolymerElements/iron-behaviors#2.0-preview"
+    "polymer": "Polymer/polymer#1.9 - 2",
+    "paper-styles": "PolymerElements/paper-styles#1 - 2",
+    "iron-flex-layout": "PolymerElements/iron-flex-layout#1 - 2",
+    "iron-behaviors": "PolymerElements/iron-behaviors#1 - 2"
   },
   "devDependencies": {
-    "iron-component-page": "PolymerElements/iron-component-page#2.0-preview",
-    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#2.0-preview",
-    "iron-icon": "PolymerElements/iron-icon#2.0-preview",
-    "iron-icons": "PolymerElements/iron-icons#2.0-preview",
-    "paper-icon-button": "PolymerElements/paper-icon-button#2.0-preview",
+    "iron-component-page": "PolymerElements/iron-component-page#1 - 2",
+    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#1 - 2",
+    "iron-icon": "PolymerElements/iron-icon#1 - 2",
+    "iron-icons": "PolymerElements/iron-icons#1 - 2",
+    "paper-icon-button": "PolymerElements/paper-icon-button#1 - 2",
     "test-fixture": "PolymerElements/test-fixture#^3.0.0-rc.1",
-    "web-component-tester": "Polymer/web-component-tester#^6.0.0-prerelease.6",
-    "webcomponentsjs": "webcomponents/webcomponentsjs#^1.0.0-rc.1",
-    "iron-test-helpers": "PolymerElements/iron-test-helpers#2.0-preview",
-    "paper-input": "PolymerElements/paper-input#2.0-preview"
+    "web-component-tester": "^6.0.0",
+    "webcomponentsjs": "webcomponents/webcomponentsjs#^1.0.0",
+    "iron-test-helpers": "PolymerElements/iron-test-helpers#1 - 2",
+    "paper-input": "PolymerElements/paper-input#1 - 2"
   },
   "variants": {
     "1.x": {
       "dependencies": {
-        "polymer": "Polymer/polymer#^1.1.0",
+        "polymer": "Polymer/polymer#^1.9",
         "paper-styles": "PolymerElements/paper-styles#^1.0.0",
         "iron-flex-layout": "PolymerElements/iron-flex-layout#^1.0.0",
         "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0"
@@ -60,7 +60,13 @@
         "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0",
         "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0",
         "paper-input": "PolymerElements/paper-input#^1.1.22"
+      },
+      "resolutions": {
+        "webcomponentsjs": "^0.7"
       }
     }
+  },
+  "resolutions": {
+    "webcomponentsjs": "^1.0.0"
   }
 }