Bug Fixes
- Guard `public_suffix_list` in `new()` w/ `#cfg` (ac20fc4)
- (breaking) Add `new_with_public_suffix` ctor under `public_suffix` feature (e3dc800)

Documentation
- Update CONTRIBUTORS.md (a927a2c)

Miscellaneous Tasks
- Rustfmt (0244c00)

Ci
- Update `release.sh` to use `cargo semver-checks` (1086a48)