v4.0.0-beta.3

 * Stop auto-injecting `service:i18n` into Components, Controllers,
   and Routes. Clients should instead use
   `i18n: Ember.inject.service()` as needed.
 * Fix Spanish spelling.
 * Fix `{{t}}` helper with dynamic keys.
 * Add `locale` blueprint
 * Use `Ember.Helper` if available (Ember >= 1.13)
 * Use `Ember.Service` if available (Ember >= 1.13)
 * Remove dependency on `Ember.EnumerableUtils.map` as that will be
   removed in Ember 2.0.

v4.0.0-beta.1