Merge branch 'dev'
Added some comments
Created ContourEditor in the fineditors namespace
Created ContourEditor in the fineditors namespace
Horizontal and vertical axes in ContourEditor
RestrictablePoint for restricting the possible point positions
LineRestrictor
PointRestrictor
Control point lines
PathItem holds next and prev PathItems
PathItem holds weakreferences to next and prev PathItems; EditablePath sets next and prev references
RestrictablePoint -> PathPoint
Linking PathPoints