Add support for _setProperties() to CompoundPath constructor.
Only change #clockwise on closed Paths when inserting into CompoundPaths.
Fix a bug with new _drawCount code.

Make sure items are considered selected right away if they are part of the DOM, even before they are getting drawn for the first time.
Deselect symbol definitions when setting them, to follow unit tests.
Add internal _cloning parameter to all insertion methods.
Define Item#sendToBack() and #bringToFront().