Initial checkin of pile of existing scripts.  Most are for basic interesting operations such as "feather" is for making a feather tunnel.  The TurtleSim.lia is used for debugging without CC or MC.  (It mimics a simplistic MC world.)
Added intial incomplete crush API.  This API is a basic set of tutle
digging and moving primitives.  So ability to dig a column in front,
dig a row, etc.

Also other utility functions such as parse args, etc.