v3.0.0

• Compatible with Ember 1.x. Notably, compatible with Ember 1.10+, which Ember-I18n 2.9.1 was not.
• Compatible with Handlebars 1.x and 2.x.
• Basic Ember-CLI support. When using Ember-I18n as an Ember-CLI add-on, it installs itself as a Bower dependency and adds i18n.js and i18n-plurals.js to the app.
• Drop built-in support for Handlebars template compilation. Ember-I18n ships with support for very basic Handlebars-style templates like "Hello, {{person.name}}". The template compilation method is part of the public API and can be overridden.
• Built-in translation compiler is more friendly to whitespace within interpolations.
• Drop support for the external CLDR.js definition of pluralization rules. These rules are now included as i18n-plurals.js
• {{t}} helper uses registerBoundHelper. This makes the code smaller and faster. The helper no longer supports passing tagName. The helper no longer obeys the I18N_TRANSLATE_HELPER_SPAN environment flag.
• eachTranslatedAttribute gracefully handles null translation keys
• Drop support for {{translateAttr}}. This helper was unbound. Instead use a sub-expression: <img title="{{unbound (t 'my.img.title')}}>".
• Interpolations are always escaped by default. (This was the intended behavior before, but there were bugs that caused some interpolations to come through unescaped.) Use Ember.Handlebars.SafeString or triple-stache notation to avoid over-escaping.
• TranslateableProperties cleans up translated property observers on destroy
• missingMessage takes the context as well as the translation key so users can generate more contextually-aware "missing template" messages.