power_sequencer: update to the latest master

This commit brings Power Sequencer to the current rolling version, that is
commit 9562eb58d164e234f61225250d6ac5ca858ada7b on
https://github.com/GDQuest/blender-power-sequencer/.

I had already made an intermediate commit that added new features and fixed some
bugs. This commit brings bug fixes and many quality of life improvements.

- Human-readable changelog:
  https://github.com/GDQuest/blender-power-sequencer/blob/master/CHANGELOG.md
- 1.4.0 release post:
  https://github.com/GDQuest/blender-power-sequencer/releases/tag/1.4.0
- All the commits since v1.3.0 (previous update + this one in this repository):
  https://github.com/GDQuest/blender-power-sequencer/compare/1.3.0...master

1 files changed, 2 insertions, 2 deletions

diff --git a/power_sequencer/operators/grab.py b/power_sequencer/operators/grab.py
index af8109ff..dd198668 100644
--- a/power_sequencer/operators/grab.py
+++ b/power_sequencer/operators/grab.py
@@ -56,11 +56,11 @@ class POWER_SEQUENCER_OT_grab(bpy.types.Operator):
 
     def execute(self, context):
         if len(context.selected_sequences) == 0:
-            return {'FINISHED'}
+            return {"FINISHED"}
 
         strip = context.selected_sequences[0]
         if len(context.selected_sequences) == 1 and strip.type in SequenceTypes.TRANSITION:
             context.scene.sequence_editor.active_strip = strip
             return bpy.ops.power_sequencer.crossfade_edit()
         else:
-            return bpy.ops.transform.seq_slide('INVOKE_DEFAULT')
+            return bpy.ops.transform.seq_slide("INVOKE_DEFAULT")