bumping javadoc

Author: lemire

pom.xml

@@ -138,7 +138,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.4.1</version>
+        <version>3.6.3</version>
         <configuration>
             <excludePackageNames>me.lemire.integercompression.vector;com.kamikaze.pfordelta:me.lemire.integercompression.benchmarktools</excludePackageNames>
        </configuration>