[gnome-music/wip/mschraal/type-checking: 2/6] Whitespace fixes

[Marinus Schraal <mschraal src gnome org>]

commit e1619a449add50a85be00a07ee24afc95f44f445
Author: Marinus Schraal <mschraal gnome org>
Date:   Tue Oct 13 19:54:01 2020 +0200

    Whitespace fixes

 gnomemusic/artcache.py         | 1 +
 gnomemusic/widgets/artstack.py | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnomemusic/artcache.py b/gnomemusic/artcache.py
index 67cfebc3..785d9d9d 100644
--- a/gnomemusic/artcache.py
+++ b/gnomemusic/artcache.py
@@ -21,6 +21,7 @@
 # modify this code, you may extend this exception to your version of the
 # code, but you are not obligated to do so.  If you do not wish to do so,
 # delete this exception statement from your version.
+
 from enum import Enum
 from math import pi
 
diff --git a/gnomemusic/widgets/artstack.py b/gnomemusic/widgets/artstack.py
index eb75be93..7be71f8e 100644
--- a/gnomemusic/widgets/artstack.py
+++ b/gnomemusic/widgets/artstack.py
@@ -93,7 +93,6 @@ class ArtStack(Gtk.Stack):
             self._thumbnail_id = 0
 
         self._coreobject = coreobject
-
         self._thumbnail_id = self._coreobject.connect(
             "notify::thumbnail", self._on_thumbnail_changed)