update package.json main and files
keyboard-state supports single-character and special word key names in keymap + tests.
Vector.fromPolar + test
rename import to Vector in vector-spec
Rectangle utils module a la Vector supports new, clone, centered, equal, area, and overlap + tests
remove PairSystem dependency on lodash, replace with native type tests
mouse-state component tracks mouse cursor, buttons, presence in window!
add .travis.yml for CI