Blender Git Loki

PyOperator invoke function now receives the wmEvent and default properties as 2 python dictionary args.
the Python invoke function can then edit the properties based on the event, once its finished the properties are copied back to the operator.

python exec and invoke functions can now return RUNNING_MODAL, CANCELLED, FINISHED, PASS_THROUGH flags

Still need to look into how python operators can make use of invoke/exec for a practical case. (Need to bring back the popup menu's)