Allow defining event handling functions that take the event as an arg.
Allow defining event handling functions that take the event as an arg.

mashrin/processing.py,mashrin/processing.py,jdf/processing.py,jdf/processing.py,tildebyte/processing.py,Luxapodular/processing.py,tildebyte/processing.py,mashrin/processing.py,Luxapodular/processing.py,jdf/processing.py,Luxapodular/processing.py,tildebyte/processing.py