DOC: new outline for User guide
ENH: New canvas implementation
ENH: Simulation rewritten
ENH: Trace labels migrated
ENH: Moving with token list in simulation
ENH: Snap to grid
FIX: Fixed bug in canvas
ENH: Resizing items
FIX: Minimal size of place
ENH: Replay in new canvas
ENH: Transition activities in new canvas
ENH: New undo/redo
FIX: Fixed problem in tool and net switching
FIX: Fixed redraw problem in trace_everything/trace_nothing
ENH: Examples updated
Merge branch 'newcanvas'
FIX: Fixed parameters in tests