Experienced Pixel Dungeon 2.15.3

This release fixes some more errors reported from emails and Google Play, like inability to ascend and Rat King exploits, and adds QoL features like ability to use specific amount of upgrades.

The link to Google Play version: https://play.google.com/store/apps/details?id=com.trashboxbobylev.experiencedpixeldungeon.redone