Switch build to Java 11.

Author: nedtwigg

.circleci/config.yml

@@ -1,11 +1,8 @@
 version: 2.1
 anchors:
   env_gradle: &env_gradle
-    environment:
-       # we're only allowed to use 2 vCPUs
-      GRADLE_OPTS: "-Dorg.gradle.workers.max=2"
     docker:
-      - image: cimg/openjdk:8.0
+      - image: cimg/openjdk:11.0
 
   restore_cache_wrapper: &restore_cache_wrapper
     restore_cache:

settings.gradle

@@ -20,7 +20,7 @@ plugins {
 	id 'org.jdrupes.mdoclet' apply false
 }
 blowdryerSetup {
-	github 'diffplug/blowdryer-diffplug', 'tag', '5.0.2'
+	github 'diffplug/blowdryer-diffplug', 'tag', '5.0.3'
 	//devLocal '../blowdryer-diffplug'
 }