Files in here are in various states of disrepair and/or have been

superceded by revised code in the directory above.

They're here until we figure out what to do with them.

* gmsk_test.py: stand-alone program that exercises the GMSK packet tx

and rx code.  The two halves are connected with a simulated noisy

channel.  It's easy to add extra instrumentation to log various internal 

states.  We used a variant of this code to get this working in the

first place.