Use 3.6.0 as release version (#233)

Author: hgschmie

Diff for: pom.xml

@@ -28,7 +28,7 @@ under the License.
   </parent>
 
   <artifactId>maven-javadoc-plugin</artifactId>
-  <version>3.5.1-SNAPSHOT</version>
+  <version>3.6.0-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven Javadoc Plugin</name>

Diff for: src/main/java/org/apache/maven/plugins/javadoc/AbstractJavadocMojo.java

@@ -846,7 +846,7 @@ public abstract class AbstractJavadocMojo extends AbstractMojo {
      * post java 9. This allows non-JPMS projects that have moved to newer Java
      * versions to create javadocs without having to use JPMS modules.
      *
-     * @since 3.5.1
+     * @since 3.6.0
      */
     @Parameter(property = "legacyMode", defaultValue = "false")
     private boolean legacyMode;