Resources will be able to stack; shards, arrows, feathers, potion ingredients etc.
Food, potions and equipment do not stack.
Open to suggestions for more stackable items!
A new update has been released v.290; This update brings in the "Chum Bucket" and "Chum Knife" to store your fish in a stackable way.
Newest Update v.293 is out now and adds 3 new items to use. Chum Bucket has been limited to 250, but can be overfilled strategically, and you keep any chum pre-update. Appreciate all of your feedback!