Build: Allow beta releases as well as release candidates.

Author: rozza

project/Versioning.scala

@@ -6,6 +6,7 @@ object Versioning {
   val snapshotSuffix = "-SNAPSHOT"
   val releasedVersion = """^r?([0-9\.]+)$""".r
   val releasedCandidateVersion = """^r?([0-9\.]+-rc\d+)$""".r
+  val betaVersion = """^r?([0-9\.]+-beta\d+)$""".r
   val snapshotVersion = """^r?[0-9\.]+(.*)$""".r
 
   def settings(baseVersion: String): Seq[Def.Setting[_]] = Seq(
@@ -15,6 +16,7 @@ object Versioning {
     git.gitTagToVersionNumber := {
       case releasedVersion(v) => Some(v)
       case releasedCandidateVersion(rc) => Some(rc)
+      case betaVersion(beta) => Some(beta)
       case snapshotVersion(v) => Some(s"$baseVersion$v$snapshotSuffix")
       case _ => None
     }