CoCo MiniLisp

This is an initial port of Rui Ueyama's MiniLisp to the Tandy Color Computer.

With modest tweaking, this should run on any Color Computer with 32KB or more running DECB, but I have only tested it against MESS emulating a Tandy Color Computer 3 with DECB 1.1.

There are a few example programs on the disk image including fib, fact, life and nqueens. Unfortunately, the latter two do not yet due to memory limitations.