There is an open issue (#2) regarding Keyboard Control, and this is a possible keyboard native solution.
Additions
Adds a focus indicator (with animation) and removes access to the highlightRedTile, etc, fields.
Contains lots of various interpolators.
Adds HSV Color
Adds a field focus to GameManager
Removals
removes the old highlighting square method, although they still exist in the scene.
disables anti-aliasing.
I did this because it shows no visible difference, but it makes the new highlighter look sharper. I don't think this app really needs anti-aliasing as it stands, the graphic quality isn't high-res.
Motivation
There is an open issue (#2) regarding Keyboard Control, and this is a possible keyboard native solution.
Additions
focustoGameManagerRemovals