jshint cleanup
package: adds mocha/istanbul
rename to fixtures
explicit comparisons are easier to understand
use argument instead of redeclaring M
formatting fixes
test both sha1 and sha256
avoid confusing abstraction
remove util.js
adhere to NIST paper properly
add sha512 impl
README: add newline before testling badge
LICENSE: update to include all contributors
index: remove unused export
hash: use Buffer.fill
hash: increase verbosity
consistent formatting