Version 0.525

This version fixes a bug with two Early Access features and one general bug:

1 -  The sprites tileset was not correctly set in the ROM when using a big tileset for the BG.

2 - Swapping the Tilesets in the Tilesets module did not work properly if the tilesets had different sizes.

3 - If you had set in the preferences to "check for updates on startup" and a new version was available, it would crash on startup. Ironic, I know. Fixed. If you're getting a crash you can delete the preferences.ini file or install this update.

Thank you!