Hi there! We're working on version 2.0 at the moment, with a complete overhaul of the battle system as well as adding curse stages to your follower.
In the lighter version of updates we're working on rolling over card collection, have a book that you can check your collection in, as well as a bonus menu option to view endings. So we're sorry it's been a while but the next update will be a really big one we hope you enjoy!