title: Is there a conversion/migration guide for Scala v2.9 to current v2.12.x?
body: <p>There is a Scala library I would like to use (<a href="https://github.com/pmatiello/pistache" rel="nofollow noreferrer">PiStache</a>) that was written for Scala v2.9 and hasn't been updated in 7 years. </p>
  
  <p><strong>Q: Can anyone point to a conversion or migration guide for Scala v2.9 to the most current v2.12.x?</strong>  </p>
  
  <p>I have searched the web for any conversion or migration guides, and haven't found any.  The only option I see is going through the successive release notes hoping they list incompatibilities.</p>
  
  <p>I have found various discussion threads that describe why there there are incompatibilities between minor versions, but no succinct list of changes that need to be made.  Of course, I could take the trial and error approach and simply compile the library under 2.12.x and then respond to error messages, but I'm hoping to avoid that (potentially) time consuming process.</p>