While here, clean up and s/zb64/b64/g
This PR will * Use lifo for reading from stdin * Add versioning * Verbosify errors Reviewed-on: zig/zb64#1 Co-authored-by: Kalle Carlbark <kalle.carlbark@kcbark.net> Co-committed-by: Kalle Carlbark <kalle.carlbark@kcbark.net>