Certain structs contain sized character arrays that are converted to
`CStr` for convenient accss to the user and our `Debug` implementation
using unsafe `CStr::from_ptr(...as_ptr())`. There is no need to
round-trip to a pointer and possibly read out of bounds if the
NUL-terminator index (string length) is instead searched for by the
newly stabilized `CStr::from_bytes_until_nul()` fn since Rust 1.69
(which panics if no NUL-terminator is found before the end of the
slice).
Unfortunately `unsafe` is still needed to cast the array from a `c_char`
(`i8` on most platforms) to `u8`, which is what `from_bytes_until_nul()`
accepts.
Some links were still pointing to the (moved) `MaikKlein/ash` repo,
instead of the new shared `ash-rs/ash` repository under this
organisation, GitHub still provides a redirect, but we should aim to
provide the correct link from the get-go. Only the gitter channel
remains as it was impossible to get the room to be renamed. The
`ash-rs/ash` channel exists but there is currently no activity.
