added a draw method
(#297)
added drawshoot
(#297)
added drawK method, improved ImageCorrFunc docstring and added the add_to_image kwarg to the applyNoistTo method
(#297)
fixed bug
(#297)
fixed another bug
(#297)
removed normalization in call to draw within corr func method
(#297)
moved the applyNoiseTo method to the base class
(#297)
improved handling of the _rootps_store, made it a generic feature
(#297)