added first version of a data structure for conducting consistency checks
some minor improvements
added routine to go through all the nodes of the origin model in the appropriate type order
comparison routine now works for all type of nodes
added comments to all classes and methods
added the possibility to easily add and remove methods from the merge process
results of the matching process are now stored properly and are printed out to the console
Added comments
fixed bug in switch/case statements (added breaks after each case …)
implemented globalIDs for every node imported or created in the pssif mf
- Implemented tokenizing of labels
- added comments
Added text normalization (Case, Stemming, Stopwords, Tokenizer, Wordsplitting)
added word splitter
- fixed bug in stop words filter (Exception was thrown because elements were removed from linked list while iterator iterated over list)
- call of stemmer changed
- added class normalizer (responsible for applying the right normalization techniques onto labels + tokens)
- fixed bug in CaseNormalizer: now gives back the correct value
- refactored some code in Class MatchingProcess and deleted some old code
- removed testing comments
- integrated Levenshtein Distance Metric + StringEditDistanceMatcher
- some small name refactorings
- added comments to many classes & functions
- Added first implementation of Linguistic Matching (WordNet impl still missing!)
- changed the data structure of the ComparedNormalizedTokensPair, to differ between syntactically  and semantically normalized tokens
- fixed some small bugs
- added comments
- added GUI for PSSIF Consistency
- fixed some bugs (in MatchingMethods)
- merge methods can now be selected by the use
	- users can choose the active methods
	- users can choose the weight per method
- fixed some bugs with metrics calculation
- added comments for new code