* CI speedup
* use the new stuff
* push
* no regressions
* try that
* don't let this slip
* fix modeld tests
* fix linter
* modernize prebuilt
* cleanup
* fix those
* increase a bit
old-commit-hash: 00494a44f4
* use cstring instead of string.h
* use cstdio instead of stdio.h
* remove inttypes.h
* use cstdlib instead of stdlib.h
* use cstdint instead of stdint.h
* #include <cstddef>
* cstdlib
* use cmath
* remove stddef.h
* use cassert
* use csignal
* use ctime
* use cerror
* rebase master
old-commit-hash: c53cb5d570