Add OpenJDK 12 to Travis builds.
From Travis: This job ran on our Precise environment, which is in the
process of being decommissioned. Please update to a newer Ubuntu version
by specifying dist: xenial in your .travis.yml.
diff --git a/.travis.yml b/.travis.yml
index 87f06a9..6e76aa7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,13 +16,12 @@
 language: java

 sudo: false

 

-dist: precise

-

 jdk:

   - oraclejdk8

   - oraclejdk11

   - openjdk8

   - openjdk11

+  - openjdk12

   - openjdk-ea

 

 after_success: