2.2.0

What's Changed

• Improve sonar packaging, added requiredForLanguages by @gtoison in #43
• Workaround for the issue with sonar.plugins.downloadOnlyRequired by @gtoison in #44
• Use ClassPathForMain to get the classpath by @gtoison in #46
• Upgrade errorprone to 2.31.0 by @gtoison in #47
• Upgrade picnic to 0.18.0 by @gtoison in #48
• Upgrade NullAway to 0.11.2 by @gtoison in #49

Full Changelog: 2.1.0...2.2.0