Fix bug for dragging node left and up
Ignore NetBeans configs
Add methods addNodes and addLinks to Graph
Add simple validator test for consistency
Refactor MainFrame constructor to introduce extensibility & separate initialization routines
Change interface for validator. Kirill please check
Add GraphFactory and raw test. Beta version only
Remove old test
Merge branch 'master' of https://github.com/SnoopInf/pzks.git
Add TODO tasks
slight changes
Rename validate to isValid
Remove errorMessage from Graph
Refactor validation
Update comment
Update comment
Remove commented lines
Add toString and name to GraphObject
Change Set to Coollection in constructor
Rename local variables