message: Have docgen produce the Contributing and Changelog files in the tree
diff: <tab type="pages" visible="no" title="" intro=""/>
  </tab>
  <tab type="modules" visible="yes" title="Plugins and Core Lib Functions" intro="The plugins and core libraries are listed below:"/>
  + <tab type="user" url="md_CONTRIBUTING.html" title="Contributing"/>
  + <tab type="user" url="md_CHANGELOG.html" title="Changelog"/>
  <tab type="namespaces" visible="yes" title="">
  <tab type="namespacelist" visible="yes" title="" intro=""/>
  <tab type="namespacemembers" visible="yes" title="" intro=""/>
  