Bumped version to 2.2.0

Author: tfenne

version.sbt

@@ -3,5 +3,5 @@ gitHeadCommitSha in ThisBuild := scala.sys.process.Process("git rev-parse --shor
 
 // *** IMPORTANT ***
 // One of the two "version" lines below needs to be uncommented.
-// ThisBuild / version := "2.1.0" // the release version
-ThisBuild / version := s"2.1.1-${gitHeadCommitSha.value}-SNAPSHOT" // the snapshot version
+ThisBuild / version := "2.2.0" // the release version
+// ThisBuild / version := s"2.2.1-${gitHeadCommitSha.value}-SNAPSHOT" // the snapshot version