Small fix for font sizes.
Spawn debris correctly (take angle into account) for issue #34.
Merge branch 'feature/34-spawn-debris-correctly' into develop
Fix flicker in success/death screens by moving the drawing code from logic to redraw :).  Solves issue #24
Merge branch 'feature/24-fix-flicker-success-death-screens' into develop
Show accumulated damage in redraw and in doDamage upon death.  Solves issue #23
Merge branch 'feature/23-show-cumulative-damage' into develop
Solve issue #22 (zoom).  Use canvas-zooming (hopefully hardware-accelerated) to zoom.
Merge branch 'feature/22-zoom' into develop
Merge branch 'develop' into feature/3-controls-for-tablets
Optimize performance for tablets.