The Zero Edition

This version exists as a point of reference for building against, but is not how the finished product will look.
Currently, I plan to add the following before going 1.0.0:

• m --build [input] [output] will auto-magically find the path from frontend to backend (and clean up after build)
• change m install to allow both binaries and build-from-source
• make it so m init also installs the garter toolchain

I do not plan to add an m update function; this should be done through either
the system's package manager, or by manual upgrade.