release v4.0.0-beta2
fix build script to accept "x.x.x-beta1" as version
release v3.1.12
release 3.1.11
release 3.1.10
release SpotBugs v3.1.9
release 3.1.8
release v3.1.7 for better Java 11 support
release v3.1.6
release v3.1.5