Release 3.1.3 move to scala 2.12
- support for scala 2.12 which comes with these goodies:
- repl gets syntax coloring
- repl TAB completion is improved
- faster startup times
- trailing commas in models
- ...
- fix warning on depcrecated JavaConversions
- fix how models are interpreted from GUI as import full path generates errror in new repl reqT.Model becomes reqT.reqT.Model