Project Scala version updated to 1.12.8; all the IDE & compiler warnings fixed#607

Merged

havocp merged 1 commit intolightbend:masterfrom michalmela:scala-2-12-8

Jan 7, 2019

+150-158

Commits on Jan 7, 2019

Project Scala version updated to 1.12.8; all the IDE & compiler warnings fixed
michalmela-tomtom
committed