#110 Fix scrolling large grids in OnDemandGrid
ColumnSet.renderArray() now handles Deferreds
Added row buffer to OnDemandGrid to increase perceived performance
Fixed row reordering bug in Chrome (_StoreMixin.js)
Merge branch 'master' of git://github.com/scbird/dgrid into scrolling-large

Conflicts:
	_StoreMixin.js
	test/complex_column.html
Reverting the use of maxHeight (but made the default set to Infinity so it is only used when explicitly changed)
Reverted putting the count property on the preload object instead of the node
Revert back to not splitting preload nodes, to keep rows contiguous.
Fixed issues with reclaiming loading nodes as distant nodes.
Merge branch 'master' of git://github.com/SitePen/dgrid into scrolling-large

Conflicts:
	OnDemandList.js
	test/complex_column.html
Remove trailing comma
Don't apply maxEmptySpace to preload nodes above so we don't mess up scrolling
Merge git://github.com/SitePen/dgrid into scrolling-large

Conflicts:
	OnDemandList.js
Merge pull request #132 from kriszyp/scrolling-large

Improvements to OnDemandList particularly for large grids
Update CHANGES to reference 0.3
Use widget id as argument for registry.remove as it takes an id and not a widget instance.
Add destroyRecursive method becuase containers check for and call destroyRecursive in their destroyDecendants cleanup.
Allow programmatic activation of cell editors via grid.edit(cell)
Minor improvements towards allowing tree and editor to interoperate
Allow editOn editors to work in tree(editor(...)) case
tree: add support for shouldExpand function on column definition
Add provision for optional column.init method

Not touching editor yet and only touching tree lightly, since a
significant amount of changes are on other branches I have, which
I'll likely merge this to.
Merge branch 'col-init' into tree-expand

Conflicts:
	tree.js
Merge branch 'col-init' into tree-editor

Conflicts:
	tree.js
Update editor.js to make use of column.init
Add simulated events for row/cell mouseover/out; fixes #165
ColumnHider: iterate subRows array rather than column hash; fixes #164