findNextSeparatrixSegment method added.
TransverseCurve class and its constructor is added.
Mainly writing printing methods to different classes. Instead of overloading the operator << which sometimes involves declaring the function friend of multiple classes, and does not allow customization of printing, many printing methods now return a string.
Foliation::printGoodSepSegments method added
Switched to using pointers to point to SeparatrixSegments much more often to save copying. Plan: kill currentSepSegments, and use the last entries of goodSeparatrixSegmens for that purpose.