Version 02 is the last version which worked via USB (using
Serial.print()).

Version 03 is the new version which communicates solely through
bluetooth via Serial1.print().  It also has the following
changes:

- No SD card required - all data is now stored as variables
in local memory.  Internal Teensy time measurements were
also removed
- Stores calibration values in long term (even after power
off and restart) in EEPROM.  However, uploading a new program
will delete the EEPROM on Teensy 3.0.
- Updates bluetooth output structure to include the tagged
markers (like <VARIABLE1>56.23</VARIABLE1>... etc.)
- Device now waits for a 3 digit number (000 - 999) which
initiates a protocol.  999 is blank (null), 000 is
calibration, 001 is DirkF, 002 is Basic Fluorescence, 003
is WASP, and 004 is EEPROM tests (for testing only).  Only
001 DirkF is 'ready for prime time' - more work needs to
be done on the others.
- Updated DirkF to save each of the 4 measurement pulses
as a separate variable.  Also created and saved Fs, Fm,
Phi2, 1/Fs-1/Fd as variables.

NEXT STEPS:
Update Basic Fluorescence to pull calibration from EEPROM,
include Fs, Fm, Phi2... etc.
Signed-off-by: gbathree <gbathree@gmail.com>