Added comments to TreeController
Problem fixing of function getInputSingular and getClassSingular in TreeController
Merge branch 'master' of github.com:ArjanO/AP-NLP
Merge branch 'master' of https://github.com/ArjanO/AP-NLP into multiplicity
Merge branch 'multiplicity' of https://github.com/ArjanO/AP-NLP into multiplicity
Merge branch 'multiplicity' of https://github.com/ArjanO/AP-NLP into multiplicity
Changed Export functionality to use Hashmap with multiplicity. Added tests for this (not yet with multiplicity).
Merge branch 'multiplicity' of https://github.com/ArjanO/AP-NLP into multiplicity
change HashMap to TreeMap