title: How to perform rebase (squash) using tortoisegit
body: <p>Cannot get how to perform squash rebase for the current branch. The console command would be</p>
  
  <pre><code>git rebase -i HEAD~2
  </code></pre>
  
  <p>and then squash as usually. But how to do the same in TGit?</p>
  
  <p>Script to initialize the case</p>
  
  <pre><code>git init .
  touch 1
  git add 1
  git commit -m "1"
  touch 2
  git add 2
  git commit -m "2"
  touch 3
  git add 3
  git commit -m "3"
  </code></pre>
  
  <p>As a result after squashing we would have 1 commit with 3 files.</p>
  
  <p>Any proposals?</p>