A minor alpha release to pull in some recent fixes.
- @android606 stepped up and fixed an old bug, of 'if the radio has a broken irq wire. report that as a critical fault in the diagnostics'
- @mc-hamster fixed #664 - blink the LED when the BLE pin is disabled
- @mc-hamster added beginning support for beepers/speakers and added documentation for this
- @mc-hamster fixed problems with remote GPIO control
- fix bug #677: don't reboot board if someone tries to send a packet but no radio chip was found, instead just report a fault
- Fix charging indication for boards that have 'dumb' battery sensors
- Use the new logo