Changed WatershedData and other classes to new-style
Cleaned up CheckForMalformedRegions, added the function MakeCellNetworkPickleFiles, made CheckForMalformedRegionsCallback call the SWHelpers.MakeCellNetworkPickleFiles if it passes the SWHelpers.CheckForMalformedRegions function
Added a file called Tips and tricks.txt
Catch the allMatched return value and pass it along in SWHelpers.MakeCellNetworkPickleFiles; make a new message using this in SWS.CheckForMalformedRegionsCallback
Bugfixes in mpl_polygon_lasso.py