Merge branch 'feature/refactor' into develop

* feature/refactor:
  Fix unsupported matchAboutBlank in Firefox, improve script execution stability
  Convert a few files to helper classes
  Fix call to create context menus, note unfixed workaround
  Use promise-based webextensions api
  Switch calls to webextensions
  Add webextension polyfill
  Split packaging between Chrome and WebExtensions
  Make code compatible with WebExtensions, primarily Firefox
  Add eslint-plugin-compat to check Chrome features
  Switch to ES2015 modules using rollup
  Split up source files

.eslintignore

@@ -1 +1,2 @@
 node_modules/
+lib/

.eslintrc

@@ -1,15 +1,23 @@
 {
     "env": {
+        "browser": true,
         "es6": true
     },
     "plugins": [
+        "compat"
     ],
-    "extends": ["standard"],
+    "extends": [
+        "standard"
+    ],
+    "globals": {
+        "browser": false,
+    },
     "rules": {
         "block-scoped-var": "error",
         "brace-style": "off",
         "camelcase": "error",
         "comma-dangle": ["error", "always-multiline"],
+        "compat/compat": "error",
         "complexity": ["off", 5],
         "consistent-this": ["error", "self"],
         "curly": "error",

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
-.package/
+package/
 *.zip
+dist/

DEVELOP.md

@@ -108,8 +108,16 @@ git checkout develop
 # Start a new feature. Us a descriptive "<feature-name>", such as "automatic-language-detection".
 git flow feature start <feature-name>
 
+# Watch the source files for changes; one command per terminal.
+npm run --silent watch:background
+npm run --silent watch:popup
+npm run --silent watch:options
+
 # Code your feature and add the files.
 
+# Make sure the code builds.
+npm run --silent rebuild
+
 # Fix any warnings and errors before committing.
 npm run --silent test
 
@@ -136,9 +144,6 @@ These steps are only done by the project owner.
 # Finish up any features, switch to develop.
 git checkout develop
 
-# Fix any warnings and errors before committing.
-npm run --silent test
-
 # Ensure all strings have been translated.
 # Check the diff as well as the final per-key message string count.
 npm run --silent messages:translate
@@ -147,6 +152,9 @@ npm run --silent messages:translate
 # This includes new code files/translations/resources added/removed since the last release.
 cat extension-files.txt
 
+# Fix any warnings and errors before committing.
+npm run --silent prepackage
+
 # The "<release-version>" needs to follow semantic versioning, such as "v1.0.0".
 # http://semver.org/
 git flow release start <release-version>

extension-files.txt

@@ -11,6 +11,10 @@ _locales/ru/messages.json
 _locales/sv/messages.json
 _locales/zh/messages.json
 CLA.md
+dist/background.js
+dist/options.js
+dist/popup.js
+lib/browser-polyfill.js
 LICENSE
 manifest.json
 README.md
@@ -35,12 +39,5 @@ resources/icon/icon-stop/icon-96x96.png
 resources/style/options.css
 resources/style/popup.css
 resources/style/shared.css
-src/background.js
-src/language.js
-src/options.html
-src/options.js
-src/popup-start.html
-src/popup-start.js
-src/shared-frontend.js
-src/shared.js
-src/tabrow.js
+src/options/options.html
+src/popup/popup.html