Make a single data structure for all the sequence command stuff.
Leave more room for sequence commands.
Load and save seq commands to/from flash.

Sacrifices one image, unfortunately, but we can still fit 15.
Allow port interrupts to remain enabled in PM2
Handle the (currently not set up) port 1 interrupts.
Configure the interrupt so it should actually wake up on tap.
Ensure com and rc services run at least once.
Only block on tx available during remote control sessions.
Dump accelerometer data on interrupt.