Patch notes: level decrease, missing skin, mini-boss rewards

Hello, Overlords!

The bug that caused your girls to lose levels when upgrading has been fixed. There's also a known issue with the cost of the level and skill upgrade not counting correctly on the '+n levels for', it will be fixed soon!

We've removed the duplicate Brewmistress Tilly skin and sent 3000 Mirths as compensation to all users who had it, so they can purchase it from the Dungeon Brawl event store. Please let us know if you think you didn't receive this compensation (we have a list).

The rewards for Mini-Boss battles have been changed to reflect what we intended.