Turned the JavaDoc plugin to quiet mode. This reduces the number of messages during the build. Errors and warnings are still printed.
diff --git a/pom.xml b/pom.xml
index 9a4a9b6..d87dbf6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -733,6 +733,7 @@
                     <keywords>true</keywords>
                     <linksource>false</linksource>
                     <failOnError>true</failOnError>
+                    <quiet>true</quiet>
                     <source>${maven.compile.sourceLevel}</source>
                     <verbose>false</verbose>
                 </configuration>