Fixes detaching pane to call super method first before clearing the rootResponder.
Makes the transition API nicer to use by removing the _OUT and _IN prefixes.  Also fixes the transitions that manipulate layout to properly reset the original layout when complete.
Tidies a la jshint.
Adds willShowInDocument, willHideInDocument, didShowInDocument and didHideInDocument nofication callbacks.  This allows you to do updates to the UI without needing to observe isVisible or currentState.
Tidies SC.Pane.
Adds backwards compatibility for passing jQuery objects to appendTo and prependTo.
Makes SC.MainPane become and resign key pane when appended/removed.
Fixes docs for updated transition syntax.
Improves isVisibleInWindow backwards compatibility.
Adds `createdByParent` property that is set to true when the view was instantiated by its parent through createChildView.
Prevents memory leaks and simplifies the code of several views by using createdByParent to identify when the child view being removed was automatically created and should now be destroyed.
Fixes the way that SC.PanelPane becomes/resigns key pane.
Deprecates layerNeedsUpdate, layerLocationNeedsUpdate and updateLayerLocationIfNeeded.  Deprecating layerNeedsUpdate allows us to remove an extra observer on all SC.Views and the functionality is already well covered by displayDidChange, updateLayer and updateLayerIfNeeded.  The layerLocationNeedsUpdate code is handled by the statechart now.
Improves documentation in SC.View.
Changes updateLayer to be a forced update as opposed to updateLayerIfNeeded, which will queue appropriately.
Fixes regression when renderChildViews is called within the render method, resulting in it being called twice.
Re-enables the layoutChildViews functionality in the layout module.  It's debatable that anyone uses this code, but maybe it will come in handy.
Remove debug statement.
Fixes unit tests for SC.View refactor.
Fixes regression in SC.ContainerView when content is null.
Removes layer observer from SC.ImageView and use didCreateLayer callback instead.
Fixes improper unit tests.
Adds legacy support for observing layerNeedsUpdate.