Blender Git Loki

Sequence editor, (peach request)
Grab/Extend from frame - similar to a feature thats know as ripple editing in other applications. this is a fast way to add or remove frames
from
clips. to use.

Select all, drag the playbak head to the area you want to extend and press Ekey, the clips will be extended on the side the playhead that
the mouse is on.

Also did more cleanups to sequencer transform code.