The operators on this branch have the following new properties:
- they can be chained with "*", "+", and "-"
- they have new properties ".inverse" and ".adjoint", which return the inverse resp. the adjoint operator
This allows very simple creation of combined operators. See the end of demos/wiener_filter_easy.py or nifty/library/wiener_filter_curvature.py for a nice demo.
@kjako, @dpumpe, @parras, @theos, @reimar, @ensslint : I'd be happy about any feedback!