Added elation.implement(), elation.reparent, elation.utils.isString
elation.html.addclass()/removeclass() now support arrays
New components: elation.ui.treeview, elation.ui.window. elation.ui.tabs
Fixed event.data when event.data is 0
Added default elation.events.handleEvent()
Merge branch 'next' of github.com:jbaicoianu/elation into next