* Add optional copy which is protected against power failure without spearate flash bank
* Implement power-interrupt safe exchange operation with a temporary flash page sdtorage
* More hooks?
* Properly rename to moonboot from moonshine/moonboots
* Use MPU to protect memory regions from invalid access https://github.com/helium/cortex-mpu
* => use pow2::Pow2 for linker scripts?
* Implement signature check in Bootloader