FIx the FlowedLayout. Replace the "childViews" observer by another one on "childViews.[]". This was necessary because when adding children to the FlowedLayout, the added children were not positioned correctly (the observer not being triggered).
Restore _scfl_childViewsDidChange for backward compatibility.
Remove the right childViews observer on destroyMixin
Works around well-established IE XHR bug where 204 statuses are mysteriously returned with status 1223. Courtesy of Luke Chambers.
Fixes documentation of SC.FOCUS_ALL_CONTROLS and removes long deprecated warning.
Adds unit tests proving issues with SC.ArrayController's orderBy range observer handling (#1214).
Fixes bugs with SC.ArrayController's orderBy range observers. Resolves #1214.
Removes apparently nonsensical sc_require.
Refactors previous commit to swap duplicate code for fewer Objects.
Fixes a boneheaded docs typo.
Prevents duplicate notifies on the '[]' property. While most array-like objects are careful to call both enumerableContentDidChange and arrayContentDidChange together, some of them failed to wrap these to calls in beginPropertyChanges/endPropertyChanges, because both of these calls notify that the '[]' property has changed.

Instead, we will use arrayContentDidChange to call enumerableContentDidChange itself, which makes coding the array-like objects easier/faster and prevents the serious problem that '[]' observers are fired twice in a row (was a problem of SC.ChildArray).
Removes SC.ManyArray backing datahash array observers. Previously, the datahash's storeIds array was observed, but this adds the observable properties to it, which in effect alters the array. This is now prohibited and all access must be done through the proper KVO channels on the ManyArray or by setting the property on the inverse record.

Fixes #715
Improves SC.SliderView documentation. Tidies up renderer. Fixes several bugs where setting step to null would break things.
Adds step mark elements to SliderView. Includes unit tests.
Adds basic theming to Ace for SliderView step marks.
Improves (hopefully) documentation for didChangeFor.
Fixes bad unit test that invalidated the length of the SparseArray before updating the delegates test length.
Adds a new SC.LinkView for creating simple programmable HTML anchors.
Completes #1211.
Removes long deprecated SC.Scrollable mixin.