Runs with everything up through JDK 15

BruceEckel · BruceEckel · commit d56a8da62730 · 2020-10-08T15:02:36.000-06:00
JDK 16 has a Gradle fail
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: java
 jdk:
-  - oraclejdk12
+  - oraclejdk11
 install: true
 script:
   - ./gradlew --no-daemon --stacktrace run
