Major generics change: now generics "self type" is a CoreWebElements<T>
instead of WebElements. This reflects the fact that all instanciated
WebElements are always CoreWebElements
Freezing a frame is now supported
frame and window methods that received a filter were removed. The
supported way is to find specific elements inside windows or frames and
then call the root method (for instance
$(wd).window().find("a").withTitle("Hello").root(true) )