- legacy graphic engine - made the key events work (simple or with modifiers)
- legacy graphic engine - made the mouse cursor work (enabled/disabled, position report); snapping is not moving the cursor yet
- solved issue #292 where a new geometry renamed with many underscores failed to store the name in a saved project
- the name for the saved projects are updated to the current time and not to the time of the app startup
- some PEP8 changes related to comments starting with only one '#' symbol
- Gerber Editor: finished the Copy, Aperture Add, Buffer, Scale, Move including the Utility geometry
- Trying to fix bug in Measurement Tool: the mouse events don't disconnect