update transition to go smoothly from left to right
add levenshtein js
hack method to get at juicy matrix data
begin adding levenshtein functionality
add module shim to textMix
add test suite
add levenshtein path traversal
fix ability to tween between the same word
begin using levenshtein path for transition
fix more path transversal cases
fix more edge cases where NOOP should have been SUB
update to not count NOOPs as an iteration

This lets us use the 'distance' as the number of iterations that we
can do.
update transition to spread out more
perf: cache matrix creation
update docs slightly