Add jshint linting to the test process.
Allow running the Makefile from outside the project directory.
Allow boards up to 10x10 for the hardest level, by repeating rows.
Invert lerp parameters when a is not defined, not just when a is falsey (e.g. 0).
Reverse lerp parameters for Animation to give the caller greater control over method dispatch in situations where something (i.e. DOM) munged the type.
Android-inspired API for transient messages.