Version 1.3.2
* Don't show recovery seed warning if firmware is flashed for the first time
* Don't show fingerprint if firmware is flashed for the first time
* Compute firmware hash before checking signatures
* Add self-test
* Fix usage of RNG before setup
* Fix stack protector fault

Version 1.3.1
* Fix button testing so it does not break USB communication

Version 1.3.0
* Add test for buttons
* Clean USB descriptor
* Return firmware_present in Features response
* Don't halt on broken firware, stay in bootloader

Version 1.2.7
* Optimize speed of firmware update

Version 1.2.6
* Show hash of unofficial firmware
* Use stack protector
* Clean USB descriptor

Version 1.2.5
* Initial import of code