CHANGES:

- Add support for marking a release as a prerelease. (#517, @Sudha247)

- Bump the `ocamlformat` dev dependency to 0.28.1 so that the contributor setup
  documented in `CONTRIBUTING.md` can be installed again. (#520, @alexleighton)
- `dune-release publish` now respects the `--dev-repo` or `DUNE_RELEASE_DEV_REPO`
  CLI inputs. (#522, @shonfeder)