DO NOT MERGE - use 2.12 nightly for testing

Author: SethTisue

.travis.yml

@@ -7,7 +7,7 @@ language: scala
 scala:
   - 3.0.0
   - 2.11.12
-  - 2.12.14
+  - 2.12.15-bin-92c21f2
   - 2.13.6
 
 env:

build.sbt

@@ -1,3 +1,6 @@
+ThisBuild / resolvers += "scala-integration" at
+  "https://scala-ci.typesafe.com/artifactory/scala-integration/"
+
 val disableDocs =
   sys.props("nodocs") == "true" ||
     // on jdk 11 https://github.com/scala/scala-java8-compat/issues/160, seems to fail the build (not on 8)