[PyCrust] enabling shift+insert, control+insert, shift+delete keys in pycrust

[Syver E. <syv...@on...>]

PyCrust disables as is disables some of the standard bindings for
copying, deleting and inserting text.

The following code fixes the problem:
From shell.Shell method OnKeyDown
        # Don't toggle between insert mode and overwrite mode.
        elif key == WXK_INSERT and not (event.ShiftDown() or event.ControlDown()):
             pass

The only added code is :
and not (event.ShiftDown() or event.ControlDown())
-- 

Vennlig hilsen 

Syver Enstad