There were a couple issues preventing running the build with Java 11
- A groovy bug - fixed with a version bump https://issues.apache.org/jira/browse/GROOVY-8727
- The ASM version that is embedded in easymock does NOT support Java 11 classes - worked around by stubbing out those usages instead
- javadoc modules issue - fixed by setting the Javadoc source version to 1.7
- Allowed pluggable Encoder/Decoder for JWT building and parsing via new Encoder/Decoder and JwtBuilder#base64UrlEncodeWith
and JwtParser#base64UrlDecodeWith methods respectively
- added RFC 4648 Base64 test vectors per code review
- Added tests for all new code to retain 100% code coverage, verified by Clover and Coveralls
- Enabled oraclejdk10 and openjdk10 builds in TravisCI
- Replaced gmaven plugin with gmavenplus to work on JDK >= 9
- Upgraded surefire and failsafe plugins to 2.22.0 to ensure build works on JDK >= 10
- Ensured JavaDoc linter wouldn't fail the build for JDK >= 8 (was previously only 1.8)
- Updated changelog doc to reflect new Base64 functionality