Several notable changes have been made since 4.5.0:
- A new CMake build system has been introduced to replace coreconf,
- Support for OpenJDK versions 8 through 11 has been added,
- Reproducible JAR builds,
- Minor DER encoding issues have been fixed,
- Synced supported TLS ciphersuites with NSS,
- Introduced PKCS11 Constants in JSS to replace Sun constants,
- And various other minor changes.
Thanks to everyone who has contributed since 4.5.0!
See [the comparison](https://github.com/dogtagpki/jss/compare/v4.5.0...v4.5.1) for more detailed information about what changed since 4.5.0, or look at the [merged PRs tagged for the v4.5.1 milestone](https://github.com/dogtagpki/jss/pulls?q=is%3Apr+is%3Aclosed+milestone%3A4.5.1).