Merge pull request #126 from dwijnand/travis-ci

Bump Scala versions & add caching to .travis.yml

.travis.yml

@@ -1,11 +1,18 @@
 language: scala
+jdk: oraclejdk8
 
 scala:
-  - 2.11.8
-  - 2.12.1
+  - 2.11.11
+  - 2.12.2
 
 script:
   - sbt -Dfile.encoding=UTF8 -J-XX:ReservedCodeCacheSize=256M ";++$TRAVIS_SCALA_VERSION test;scalafmt::test;test:scalafmt::test"
 
-jdk:
-  - oraclejdk8
+cache:
+  directories:
+    - $HOME/.ivy2/cache
+    - $HOME/.sbt
+
+before_cache:
+  - find $HOME/.ivy2/cache -name "ivydata-*.properties" -print -delete
+  - find $HOME/.sbt        -name "*.lock"               -print -delete