Merge spark.local into spark; update tests and blink example

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Firmware update.
Compressed read values.
Wire interface is built out. (resolved)

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

Conflicts:
	firmware/firmware.cpp
Add in read, report, send

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
progress: write and read-loop

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Merge updates.