Bug Fix update, round 1: — BroomSweeper Playtest Steam update #95332

1. Fixed "save to main menu" button in settings that catastrophically broke the game in many ways. Now it does not break the game :) thanks @agonymouse for the playtest session that helped me understand this bug better. 2. Fixed/enabled bugs relating to removing multiple dust bunnies at the same time. This error occured because of how I was processing changes in the state of each tile. While fixing this, I also went through the 'floodfill" animation to improve it a ton, since the bug was heavily related to how that code was being processed. So, there's a new floodfill animation AND it works on open tiles, so you can watch it many times in a row :) I changed the algorithm for processing distance during that animation, so now it properly "snakes" around areas. This will hopefully have a super cool visual effect. Thanks again @interlucid for reporting the bug