General:
* Renamed window to Catfish for easier styling
* Improved error handling with thumbnails
* Improved search performance by excluding .cache and .gvfs when not needed
* Improved locate method performance with the addition of the --basename flag
* Update references of smdavis.us to bluesabre.org
* Several pycodestyle improvements
Bug Fixes:
* Stop all search methods when engine is stopped
Translation Updates:
Afrikaans, Brazilian Portuguese, Bulgarian, Catalan, Chinese (Traditional), Croatian, Czech, Danish, Dutch, French, Greek, Italian, Kurdish, Lithuanian, Portuguese, Serbian, Slovak, Spanish, Swedish, Turkish, Ukrainian