Prepare for refactor
Fix mouse cursor in surface and send pixel units to scene generator instead of grid units
Refactored out multiple widths and heights
Enable snap to grid with space bar
Enable shift key with arrow keys to move faster
Remove console logs and fix keybind resize
Fix translate listener/emitter
Merge refacto and grid unit destruction branch
Merge pull request #54 from AiNoKame/style

Merge refacto and grid unit destruction branch