revert: no longer mark --interactive as experimental

We seem to have settled down on behavior changes here (nothing
matching revset `keyword(revert) and keyword(interactive)` since 4.2
was released), so let's go ahead and advertise this excellent feature.

.. feature:: revert --interactive

  The revert command now accepts the flag --interactive to allow reverting
  only some of the changes to the specified files.

mercurial/commands.py

@@ -4517,8 +4517,7 b' def resolve(ui, repo, *pats, **opts):'
     ('d', 'date', '', _('tipmost revision matching date'), _('DATE')),
     ('r', 'rev', '', _('revert to the specified revision'), _('REV')),
     ('C', 'no-backup', None, _('do not save backup copies of files')),
-    ('i', 'interactive', None,
-            _('interactively select the changes (EXPERIMENTAL)')),
+    ('i', 'interactive', None, _('interactively select the changes')),
     ] + walkopts + dryrunopts,
     _('[OPTION]... [-r REV] [NAME]...'))
 def revert(ui, repo, *pats, **opts):