refactoring Arrow and ActionNode for better push-out method (in progress)
Refactoring css (for pref-size and min-sizes..)
Main class refactoring using string binding
expanding actionNode corrected with clearer binding in Arrow and ActionNode
refactoring messageViewController
message given for invalid format (actually, whenever there is an error in parser)
Refactored ReactiveArrow similarly to Arrow
Refactored ReactiveArrow similarly to Arrow
Refactored StructureBuilder using lambda expressions
refactored CanvasController
fixed bugs in flipNegatedFluents
fixed further bugs with flipNegatedFluent
refactored structureBuilder (mergeCommonPaths)
refactoring buildChain in StructureBuilder to reduce recursion
refactoring buildChain in StructureBuilder to reduce recursion - done