GitLab

Make assert more hygienic

See merge request !166

For some reason, C handles `==` before `&`.
So `a & b == c` is the same thing as `a & (b == c)`.

Accidentally made file references not count as references and therefore also close the fd. My bad.

Add termios baud rate functions

See merge request !165

cbindgen can't handle negative numbers, see https://github.com/eqrion/cbindgen/issues/205

Bug discovered by @xTibor. Test and input data provided by him.

Rewrite IO to use core-io library

See merge request !164