allow base 4 for input and output, 32 and 64 for output
includes: stddef.h is not required
includes: it's __linux__, not linux
Makefile: make it run with BSD make as well
Makefile: TARG → TARGET
bio: last character should have type int to not miss EOF in some situations
please the sanitizers
clean up makefile, do not remove built executable on "make uninstall"
stop using ms extensions (does not work on openbsd with clang)
update Makefile and fix a few warnings
link to where libs were stolen from
manpage: -n does not exist anymore
add LICENSE
now with a README!