Merge 2.0-preview to master

.eslintignore

@@ -1,2 +1,2 @@
-src/**/demo/*
-src/**/experimental/*
+node_modules/*
+bower_components/*

.eslintrc.json

@@ -1,18 +1,24 @@
 {
   "extends": "eslint:recommended",
+  "ecmaVersion": 6,
   "rules": {
-    "no-console": 0
+    "no-console": "off",
+    "no-var": "error",
+    "strict": "error"
   },
   "env": {
-    "browser": true
+    "browser": true,
+    "es6": true
   },
   "plugins": [
     "html"
   ],
   "globals": {
-    "CustomElements": false,
-    "HTMLImports": false,
-    "Polymer": false,
-    "WeakMap": false
+    "customElements": true,
+    "HTMLImports": true,
+    "Polymer": true,
+    "ShadyDOM": true,
+    "ShadyCSS": true,
+    "goog": true
   }
 }

.travis.yml

@@ -16,10 +16,9 @@ before_script:
 - npm install -g bower gulp-cli@1
 - bower install
 - gulp lint
-- gulp switch
 script:
 - xvfb-run wct
-- if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then wct -s default; fi
+- if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then wct -s 'windows 10/microsoftedge@14' -s 'windows 8.1/internet explorer@11' -s 'os x 10.11/safari@9' -s 'macos 10.12/safari@10' -s 'Linux/chrome@41'; fi
 env:
   global:
   - secure: bfF/o1ewpOxDNqTzWfvlwgRgGfP8OXhSQLLdEwZ6izO9tckMJuSNghk3qBXCEQJwTcUEyXP6EqfzIrRAvDXPa0H3OoinbrooDyV2wIDaVRK++WR2iZIqzqo3hGOdzm4tdrGJZe5av5Rk661Hls8aPfLbjdzcGuYXi8B4wZq2xMI=

LICENSE.txt

@@ -1,4 +1,4 @@
-// Copyright (c) 2014 The Polymer Authors. All rights reserved.
+// Copyright (c) 2017 The Polymer Authors. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are