Start work on v0.3.0 rewrite.
Adds a skeletal Makefile
Install some testing packages.
Ignore test artifacts.
Makefile bug fixes.
Install chai and sinon to help with testing.
Initial re-implementation.
Adds jam.identity and base support for map() and other functions to come.
Adds groc-based documentation.
Implement more helpers.
Update README
Minor description edit.