Cleaned module imod to comply with changes in cvfig. + signal handling is removed. + args attribute is removed. + a decorator is added to catch errors in the implementations of   IMod.apply.
Cleaned module imod to comply with changes in cvfig.
+ signal handling is removed.
+ args attribute is removed.
+ a decorator is added to catch errors in the implementations of
  IMod.apply.

Loisel/colorview2d,Loisel/colorview2d