[AphelionWasTaken]

Cleanup

• Do not recreate semaphore for each download
• Reduce UI spam during downloads
• Remove redundant request_update calls
• Create widgets on the main thread
• Check files and hashes on the main thread
• Round the chunk size when updating the UI instead of when downloading
• Move is_shit_there() into the App class where it belongs
• Destroy widgets gracefully when searching while downloading, hashing, and pausing
• Limit simultaneous downloads to 12 (I'm open to changing this)

Speedup

• Use session objects everywhere and remove requests.
• Make games.yml search concurrent instead of sequential
• Fetch firmware locales concurrently instead of sequentially