title: Replacing main branch by another on Github
body: <p>I'm currently an owner of a project on Github.
  Actually, I have many branches: V4, V5, V7 (currently in dev) and <strong>final</strong>.</p>
  
  <p>The <strong>final</strong> branch is actually the equivalent of the v6 branch (which does not yet exists).</p>
  
  <p>My current concern is that I'm about to release the v7 and merge it to the <strong>final</strong> branch just <strong>after</strong> creating the v6 branch from <strong>final</strong> and I don't how the releases will react if i remote the <strong>final</strong> branch and replace it with a <strong>master</strong> one.</p>
  
  <p>The choice to call it <strong>final</strong> was due to my predecessor and to be compliant with modern git conventions I want to call my Master branch... <strong>master</strong></p>
  
  <p>But does this will delete/affect my releases that were based on the <strong>final</strong> branch even if the commits will just be kind of "transfered" to the <strong>master</strong> branch ?</p>
  
  <p>Here's the <a href="https://github.com/PHPSocialNetwork/phpfastcache" rel="nofollow noreferrer">concerned project</a>.</p>