Rearrange game info helper code.
Update Mednafen submodule
Update yabause submodule
Add migration to new core data model that doesn’t use image thumbnails.
Remove OEDBImageThumbnail class. Delete thumbnail image files on migration.
Rewrite OEDBImage.
OEDBGame does not generate thumbnails anymore.
Set default image format to jpg with compression factor of 0.9.
Convert images to jpg after migration.
Fix some bugs introduced in previous commits.
Add support for custom game view background color (#1232).
Allow setting game view background color from ‘Secrets’ pane (Fix #1232).
Remove last traces of image thumbnails.
Update genplus submodule
Fix core data?
Remove mapping model again
Create mapping model and hope it doesn't magically change again
Fix OEDBImageMigrationPolicy to properly migrate source. Mapping model seems to be ignored when a custom migration policy is set.
Fix migration policy again.
Set image format when migrating old images.