Raw FFI bindings for raylib.
The crate is unconditionally #![no_std] — it depends only on core, so
it builds for embedded/no-std targets (linking raylib's C library for such
a target is the consumer's responsibility; see the nobuild and
nobindgen features). std consumers are unaffected. The mint adapter
feature is no-std-compatible; glam and serde currently require a
std-capable target.