Update vendored beets to 1.6.0

Updates colorama to 0.4.6
Adds confuse version 1.7.0
Updates jellyfish to 0.9.0
Adds mediafile 0.10.1
Updates munkres to 1.1.4
Updates musicbrainzngs to 0.7.1
Updates mutagen to 1.46.0
Updates pyyaml to 6.0
Updates unidecode to 1.3.6

libs/common/beetsplug/mbcollection.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # This file is part of beets.
 # Copyright (c) 2011, Jeffrey Aylesworth <mail@jeffrey.red>
 #
@@ -13,7 +12,6 @@
 # The above copyright notice and this permission notice shall be
 # included in all copies or substantial portions of the Software.
 
-from __future__ import division, absolute_import, print_function
 
 from beets.plugins import BeetsPlugin
 from beets.ui import Subcommand
@@ -34,11 +32,11 @@ def mb_call(func, *args, **kwargs):
     try:
         return func(*args, **kwargs)
     except musicbrainzngs.AuthenticationError:
-        raise ui.UserError(u'authentication with MusicBrainz failed')
+        raise ui.UserError('authentication with MusicBrainz failed')
     except (musicbrainzngs.ResponseError, musicbrainzngs.NetworkError) as exc:
-        raise ui.UserError(u'MusicBrainz API error: {0}'.format(exc))
+        raise ui.UserError(f'MusicBrainz API error: {exc}')
     except musicbrainzngs.UsageError:
-        raise ui.UserError(u'MusicBrainz credentials missing')
+        raise ui.UserError('MusicBrainz credentials missing')
 
 
 def submit_albums(collection_id, release_ids):
@@ -55,7 +53,7 @@ def submit_albums(collection_id, release_ids):
 
 class MusicBrainzCollectionPlugin(BeetsPlugin):
     def __init__(self):
-        super(MusicBrainzCollectionPlugin, self).__init__()
+        super().__init__()
         config['musicbrainz']['pass'].redact = True
         musicbrainzngs.auth(
             config['musicbrainz']['user'].as_str(),
@@ -63,7 +61,7 @@ class MusicBrainzCollectionPlugin(BeetsPlugin):
         )
         self.config.add({
             'auto': False,
-            'collection': u'',
+            'collection': '',
             'remove': False,
         })
         if self.config['auto']:
@@ -72,18 +70,18 @@ class MusicBrainzCollectionPlugin(BeetsPlugin):
     def _get_collection(self):
         collections = mb_call(musicbrainzngs.get_collections)
         if not collections['collection-list']:
-            raise ui.UserError(u'no collections exist for user')
+            raise ui.UserError('no collections exist for user')
 
         # Get all collection IDs, avoiding event collections
         collection_ids = [x['id'] for x in collections['collection-list']]
         if not collection_ids:
-            raise ui.UserError(u'No collection found.')
+            raise ui.UserError('No collection found.')
 
         # Check that the collection exists so we can present a nice error
         collection = self.config['collection'].as_str()
         if collection:
             if collection not in collection_ids:
-                raise ui.UserError(u'invalid collection ID: {}'
+                raise ui.UserError('invalid collection ID: {}'
                                    .format(collection))
             return collection
 
@@ -110,7 +108,7 @@ class MusicBrainzCollectionPlugin(BeetsPlugin):
 
     def commands(self):
         mbupdate = Subcommand('mbupdate',
-                              help=u'Update MusicBrainz collection')
+                              help='Update MusicBrainz collection')
         mbupdate.parser.add_option('-r', '--remove',
                                    action='store_true',
                                    default=None,
@@ -120,7 +118,7 @@ class MusicBrainzCollectionPlugin(BeetsPlugin):
         return [mbupdate]
 
     def remove_missing(self, collection_id, lib_albums):
-        lib_ids = set([x.mb_albumid for x in lib_albums])
+        lib_ids = {x.mb_albumid for x in lib_albums}
         albums_in_collection = self._get_albums_in_collection(collection_id)
         remove_me = list(set(albums_in_collection) - lib_ids)
         for i in range(0, len(remove_me), FETCH_CHUNK_SIZE):
@@ -154,13 +152,13 @@ class MusicBrainzCollectionPlugin(BeetsPlugin):
                 if re.match(UUID_REGEX, aid):
                     album_ids.append(aid)
                 else:
-                    self._log.info(u'skipping invalid MBID: {0}', aid)
+                    self._log.info('skipping invalid MBID: {0}', aid)
 
         # Submit to MusicBrainz.
         self._log.info(
-            u'Updating MusicBrainz collection {0}...', collection_id
+            'Updating MusicBrainz collection {0}...', collection_id
         )
         submit_albums(collection_id, album_ids)
         if remove_missing:
             self.remove_missing(collection_id, lib.albums())
-        self._log.info(u'...MusicBrainz collection updated.')
+        self._log.info('...MusicBrainz collection updated.')