Arbitrary width integers library
This is the core library of the awint system of crates. This crate is
strictly no-std and no-alloc, not even requiring an allocator to be
compiled. This crate supplies the Bits reference type and the InlAwi
storage type.
Almost all fallible functions in this crate returns a handleable Option or
Result. The only exceptions are some core::ops implementations and the
bw function.