title: Git flow release branches and tags - with or without "v" prefix
body: <p>I have seen multiple contradicting definitions on various git flow related websites. Is there an official recommendation or single source of truth?</p>
  
  <p>Branches: <code>release-1.2.3</code> or <code>release-v1.2.3</code></p>
  
  <p>Tags: <code>1.2.3</code> or <code>v1.2.3</code></p>