Add openjdk15 to testing matrix

ianferguson · ianferguson · commit e9a35528d88b · 2021-01-30T11:53:36.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,6 +16,7 @@ cache:
 
 matrix:
   include:
+    - jdk: openjdk15
     - jdk: openjdk12
     - jdk: openjdk11
     - jdk: openjdk9
