Merge branch 'mw/github-release'

* mw/github-release:
  tag format vX.Y.Z

Author: Michael Weber

.circleci/config.yml

@@ -87,12 +87,12 @@ workflows:
       - build:
           filters:
             tags:
-              only: /^\d+\.\d+\.\d+$/
+              only: /^v\d+\.\d+\.\d+$/
       - publish-github-release:
           requires:
             - build
           filters:
             branches:
               ignore: /.*/
             tags:
-              only: /^\d+\.\d+\.\d+$/
+              only: /^v\d+\.\d+\.\d+$/