Tier 3 has been added

Hi All, I've been adding some new stuff on mobile, and I'm releasing it here now. If you see any bugs or issues, please open a ticket using the support button in settings.

Thanks, Justin

-v501 -Minor performance tweaks -Tier 3 added -New boss added -10 new levels added

Full changelog here: https://towerball.wafflestackstudio.com/home/change-log