Ember.js 2.0.0 Beta5 发布

Ember.js 2.0.0 Beta5 发布，此版本更新内容如下：

#11993 [CLEANUP] Remove Ember.TrackedArray and Ember.SubArray.
#11550 [BUGFIX] Ensure that specifying an observer in a child class only observes changes to the childs dependent keys.
#10259 [BUGFIX] Make Ember.computed.or return the last falsey value (similar to ||).
#11957 [BUGFIX] Enable Ember.DefaultResolver to properly normalize hyphens (-).
#11969 / #11959 [DEPRECATE] Deprecate usage of Ember.String.fmt.
#11990 [PERF] @each should remain a stable node for chains.
#11964 [BUGFIX] Update htmlbars to v0.14.2.
#11965 [CLEANUP] Remove Ember.HTMLBars.makeViewHelper.
#11965 [CLEANUP] Remove Ember.HTMLBars._registerHelper.
#11965 [CLEANUP] Remove Ember.Handlebars.registerHelper.
#11965 [CLEANUP] Remove Ember.Handlebars.makeBoundHelper.
#11965 [CLEANUP] Remove Ember.Handlebars.makeViewHelper.
#11965 [CLEANUP] Remove Ember.Handlebars.helper.
#11965 [CLEANUP] Remove Ember.Handlebars.registerBoundHelper.
#12024 [CLEANUP] Remove ComponentTemplateDeprecation mixin.
#12001 [CLEANUP] Remove {{with}} keyword’s controller option.
#12027 [CLEANUP] Remove deprecated template access in Ember.Component.
#12019 [DOC] Add helpful assertion when using @each as a leaf in DK.
#12020 [CLEANUP] Remove specifying .render method to views and components.
#12027 [CLEANUP] Remove positionalParams specified to Ember.Component at extend time.
#12027 [CLEANUP] Remove support for specifying template in a component.
#12027 [CLEANUP] Remove deprecated template access in Ember.Component.
#12028 [CLEANUP] Store actions in actions not _actions.