title: SonarQube: calculate code coverage for delta only
body: <p>Is it possible in SonarQube to calculate code coverage for a delta only?</p>
  
  <p>For instance: a project had 1000 lines yesterday and its unit test coverage results are already in SonarQube. A new commit was pushed today with an extra 100 lines of code and additional test cases. These additional test cases cover 70 of the 100 new lines. Is there a way, possibly using TimeMachine, to retrieve/calculate the code coverage for the delta only? (in this case 70%)</p>