Version 0.4.0 alpha - Packet Verification and Sensor Integration

This version adds rudimentary packet verification  as well as
sensor data parsing and a new tab separated datafile output.  In
addition, the packet has been refactored into a class and the
miscellaneous functions now have their own header and cpp file.

The overall program is cleaner, but there's a high likelyhood
that code was broken during the changes.  Testing will resume
tomorrow.