title: Is it possible to get a list of merges into a branch from the Github website OR API?
body: <p>In our workflow, no "direct" commits are made into the master branch. The master branch only receives merges from Pull Requests.</p>
  
  <p>We can think of each merge then as a new feature added to the master branch.</p>
  
  <p>So I'd like to get a list of merges into master, as a way to visualize the blocks of features added into the product over time.</p>
  
  <p>Does git or the Github API expose this query, or do I have to parse raw commits?</p>