Reformat code using black

Segments where readability was hampered were fixed by appropriate
format skipping directives. New code should hopefully be black
compatible. The moment they remove the -S option is probably the moment
I stop using black though.

discord/partial_emoji.py

@@ -31,15 +31,18 @@ from .asset import Asset, AssetMixin
 from .errors import InvalidArgument
 from . import utils
 
+# fmt: off
 __all__ = (
     'PartialEmoji',
 )
+# fmt: on
 
 if TYPE_CHECKING:
     from .state import ConnectionState
     from datetime import datetime
     from .types.message import PartialEmoji as PartialEmojiPayload
 
+
 class _EmojiTag:
     __slots__ = ()