Difficulty tweaks; Bug Fixes: Enraged Icons + Boss Attacks (1/4/2025) — Second Rate Superheroes Steam update #1387147

Fixed a potentially game breaking issue where rarely when two bosses of the same attack spawned at once, their attacks wouldn't work. This was particularly evident when the player has a high XP Bonus leading to multiple boss spawns. Hopefully fixed an issue with stray Enraged Icons not disappearing outside of player boundaries. (Edit: most of them have been fixed but occasionally they will still pop up and this needs to be fixed). Enemy scaling for special enemies is now slightly changed to provide a greater challenge to players who are doing well. Heroes now have a scaling, invisible Power Rating that will change depending on how well you're doing, making certain enemies tougher and more damaging.