Improved many things particularly in GUI
Fixed broken double_click and context click
Fixed issues with find_edges
Fixed error with mouse move not using integer points
Fixed mistakes
Improved keyboard support
Oops
Merge branch 'gui_improvement' of github.com:tonysimpson/Geist into gui_improvement
Fixed divide by zero
Merge pull request #45 from tonysimpson/gui_improvement

Improved many things particularly in GUI