* MP_USE_ENUMS enables enums
* Wc++-compat catches some implicit conversions if MP_USE_ENUMS is defined
* 100% backwards compatible API/ABI if MP_USE_ENUMS is not defined
* (!) Always zero buffer before freeing if MP_NO_ZERO_ON_FREE is not defined
* Add MP_NO_ZERO_ON_FREE to disable hardening
* Add MP_ZERO_BUFFER, MP_ZERO_DIGITS, MP_FREE_BUFFFER, MP_FREE_DIGITS
* Never use MP_FREE directly, use MP_FREE_DIGITS or MP_FREE_BUFFER
* Add MP_USE_MEMSET to use memset instead of loop
* Disable astyle backups which are annonying in the times of git