Convert tests to tap, add npm test, expand package.json
from_diff test was broken by d9974f9e74d2c40058ff2050f7f808ab64ac8c6e
Merge branch 'master' of https://github.com/tmcw/jot into tmcw-master

Conflicts:
	tests/sequences.js
MAP(xor)'s apply method failed the updated tests: it improperly casted to a number rather than operating over booleans
Merge branch 'tmcw-master'