  *  Rename subcommand <tt>tag delete</tt> to <tt>tag cancel</tt>.
  *  New branching behavior. Now if subcommand <tt>tag branch</tt> is used,
     a new copy of manifest <tt>UUID</tt> with the same parent will be
     created, thereby forming a fork. A propagating symbolic tag with
     <tt>TAGNAME</tt> is assigned to the UUID of the new copy.  Furthermore
     all other propagating symbolic tags that the fork did inherited by the
     original manifest, are cancelled.<br><br>However, if the option
     <tt>--raw</tt> was given, the old <tt>tag branch</tt> behavior is used.
     That means, no creation of a fork by copying the manifest <tt>UUID</tt>,
     no cancelling of inherited propagating symbolic tags. The tag will be
     applied to the given <UUID> directly.<br><br>For instance
     <verbatim>
        fossil tag branch fix-12345 cfcfcfee
        fossil tag branch --raw bgcolor tag:cfcfcfee yellow
      </verbatim> will create a fork by copiying manifest <tt>cfcfcfee</tt>, apply
      a tag <tt>fix-12345</tt> that will propagate to its children and set the
      propagating property <tt>bgcolor</tt> too.