• (foundation) Upgrade compiler plugin to 3.8.1 (from 3.8.0)
• (foundation) Upgrade jar plugin to 3.1.2 (from 3.1.1)
• (foundation) Upgrade source plugin to 3.1.0 (from 3.0.1)
• (foundation) Upgrade checkstyle plugin to 3.1.0 (from 3.0.0)
• (foundation) Upgrade javadoc plugin to 3.1.0 (from 3.0.1)
• (foundation) Upgrade pmd plugin to 3.12.0 (from 3.11.0)
• (foundation) Upgrade scm plugin to 1.11.2 (from 1.11.1)
• (foundation) Upgrade git-commit-id plugin to 3.0.0 (from 2.2.6)
• (foundation) Upgrade jacoco plugin to 0.8.4 (from 0.8.3)
• (foundation) Upgrade toolchains plugin to 3.0.0 (from 1.1)
• (foundation) Upgrade checkstyle to 8.22 (from 8.17)
• (foundation) Upgrade spotbugs and spotbugs plugin to 3.1.12 (from 3.1.11)
• (foundation) Upgrade scala plugin to 4.1.0 (from 3.4.6)
• (foundation) Upgrade pmd to 6.16.0 (from 6.11.0)
• (minimal) use basepom policy 7 for checkstyle 8.2x compatibility
• (foundation) remove prerequisite clause (remove warning with maven 3.6.x)