Scala 2.13 support #85
Description
It would be great to see support for Scala 2.13 for this project.
On quick review, it looks like the main breaking change here is the change to the Map API.
- https://www.scala-lang.org/api/2.13.6/scala/collection/Map.html
- https://www.scala-lang.org/api/2.12.7/scala/collection/Map.html
Other than that it seems like https://github.com/coursera/courscala would also need to be updated.