Remove IView and IView2D
Remove ol.View base class
Remove view.getView2D() method
Rename view.getView2DState() to view.getState()
Rename olx.View2DState to olx.ViewState and use viewState property
Rename ol.View2D to ol.View
Rename olx.View2DOptions to olx.ViewOptions
Rename ol.View2DProperty to ol.ViewProperty
Rename ol.extent.getForView2DAndSize to ol.extent.getForViewAndSize
Doc fixes