Added logging to the Sketcher and 3D drawing so that all the mouse generated events are logged; useful for investigating crashing situations.
Implemented at the Sketcher drawing a filtering mechanism that detects coincident points. This solved some of the crashes that were appearing due to clicks on the same spot.
Solved the magic point drawing flickering. Now the magic points are drawn properly.
Will continue with enabling the edit mode at the Sketcher and also start making unit tests.