in mouseReleaseEvent(), extract BUCKET's code
remove unused code
extract EYEDROPPER's code in mouseReleaseEvent()
extract PEN & PENCIL's code in mouseReleaseEvent()
forget LeftButton condition
ScribbleArea re-indent
extract COLOURING's code on BITMAP in mouseReleaseEvent()
move codes of COLOURING on vector layer
move codes of PENCIL-vector layer
move ERASER-vector, EDIT's code
minor
move
flat if -> nested if
rearrange SELECT in mouseReleaseEvent()
minor
revmoe AStyle.exe
Self encapsulate: toolMode
move enum myToolModes (no more in ScribbleArea)
rename enum myToolModes -> ToolType
create class BaseTool