Add Copy/Paste for nodes
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop
Fix bug Timeline (previous & next images)
Fix bug 9th mosquito selected
Just cleaning
Add __str__ for the graph
Add getNode function
Add getNode function in nodeWrapper and use the map for parameters in node
Undo/redo works for create/delete nodes and create/delete connections
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/core/graph/node/node.py
RetrieveImage in buttleData
Add ButtleDataSingleton
update TuttleOFX
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into computeImage

Conflicts:
	buttleofx/core/graph/node/node.py
	buttleofx/data/__init__.py
	buttleofx/data/buttleData.py
	buttleofx/main.py
Merge branch 'computeImage' of github.com:buttleofx/ButtleOFX into computeImage