doc + linter + changelog

docs/changelog.rst

@@ -13,6 +13,7 @@ New features:
 * Add the item fields ``bitrate_mode``, ``encoder_info`` and ``encoder_settings``.
 * Add query prefixes ``=`` and ``~``.
 * :doc:`/plugins/discogs`: Permit appending style to genre
+* Add auto_keep option to convert.
 
 Bug fixes:
 

docs/plugins/convert.rst

@@ -66,6 +66,10 @@ file. The available options are:
   default configuration) non-MP3 files over the maximum bitrate before adding
   them to your library.
   Default: ``no``.
+- **auto_keep**: As opposite to **auto**, import non transcoded versions of
+  your files but still convert them to **dest**. It uses the default format
+  you have defined in your config file.
+  Default: ``no``.
 - **tmpdir**: The directory where temporary files will be stored during import.
   Default: none (system default),
 - **copy_album_art**: Copy album art when copying or transcoding albums matched