RELEASE.md

1. Run cargo update
2. Update Cargo.toml version fields to the new version.
3. Update the version of uniplate-derive that uniplate depends on to the new version.
4. Increment version numbers in the docs.rs and crates.io links at the top of README.md
5. Check documentation build.
6. Create a git tag with the version number.
7. Run cargo publish --dry-run and cargo publish for uniplate-derive.
8. Run cargo publish --dry-run and cargo publish foruniplate.
9. Create a Github release, automatically generating the changelog.