Added jar manifest default implementation entries.

Implements #1809

Author: jhy

CHANGES

@@ -4,6 +4,9 @@ Release 1.15.3 [PENDING]
   * Improvement: the Cleaner will preserve the source position of cleaned elements, if source tracking is enabled in the
     original parse.
 
+  * Build Improvement: added implementation version and related fields to the jar manifest.
+    <https://github.com/jhy/jsoup/issues/1809>
+
 *** Release 1.15.2 [2022-Jul-04]
   * Improvement: added the ability to track the position (line, column, index) in the original input source from where
     a given node was parsed. Accessible via Node.sourceRange() and Element.endSourceRange().

pom.xml

@@ -123,6 +123,9 @@
         <version>3.2.2</version>
         <configuration>
           <archive>
+            <manifest>
+              <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+            </manifest>
             <manifestEntries>
               <Automatic-Module-Name>org.jsoup</Automatic-Module-Name>
             </manifestEntries>