This represents the first breaking change in a new release series,
bumping all crates to the 2024 edition of Rust.
As such, the version numbers of all crates have been incremented to
represent a new prerelease series:
- `curve25519-dalek`: v5.0.0-pre
- `ed25519-dalek`: v3.0.0-pre
- `x25519-dalek`: v3.0.0-pre
Note that this commit isn't intended to cut associated crate releases of
these on crates.io, but is merely bumping the version numbers to denote
there are pending breaking changes.
This commit also includes rustfmt changes which were made as part of the
2024 edition.
Also includes clippy fixes.
`merlin` is currently a blocker for upgrading to `rand_core` v0.9 by way
of the `transcript.build_rng().finalize()` function (which we only pass
`ZeroRng` to).
There is an open PR to update `rand_core` in `merlin` and I have pinged
the relevant people to take a look, hopefully: zkcrypto/merlin#11
However, in the event we can't get `merlin` updated, this at least
unblocks the `rand_core` upgrade, and is being opened as a contingency
plan for that case.
The PR has been implemented in a way that it should be easy to switch
back to upstream `merlin` in the event they upgrade `rand_core`.
