Merge 132159d into 25a7fbc

.jvmopts

@@ -0,0 +1,4 @@
+-Xmx2g
+-Xms1g
+-XX:MetaspaceSize=512m
+-XX:MaxMetaspaceSize=1g

.travis.yml

@@ -2,22 +2,23 @@ language: scala
 scala:
 - 2.10.6
 - 2.11.12
+- 2.13.1
 sudo: false
 notifications:
   slack:
   - websudos:P9QNXx1ZGFnDHp3v3jUqtB8k
   email:
   - dev@websudos.co.uk
 jdk:
-- oraclejdk8
+- oraclejdk9
 branches:
   only:
   - master
   - develop
 matrix:
   include:
   - scala: 2.12.8
-    jdk: oraclejdk8
+    jdk: oraclejdk9
     env: RUN_WITH_COVERAGE=true PUBLISH_ARTIFACT=true
 
 env:
@@ -43,7 +44,7 @@ before_cache:
 - du -h -d 2 $HOME/.sbt/
 - find $HOME/.sbt -name "*.lock" -type f -delete
 - find $HOME/.ivy2/cache -name "ivydata-*.properties" -type f -delete
-before_script: travis_retry sbt "plz $TRAVIS_SCALA_VERSION update"
+before_script: travis_retry sbt "++ $TRAVIS_SCALA_VERSION update"
 script: ./build/run_tests.sh
 after_success:
 - ./build/publish_develop.sh