Blender Git Loki

This is the initial commit of a revamp of the sweep effects that goofster committed that was originally a sequence plugin from sirdude.

The changes from the original include the ability to add a blurred edge with a selectable width to the wipe and to rotate the effect.

Has these sweep types included already
-single
-double
-iris

These still need to be coded
-box
-cross
-clock