bugs
 - walking mobs don't stay in water - hard - high priority
 - black sand falls weirdly - hard - low priority
 - buckets of mob place at player's feet - hard - low priority

mojang bugs
 - waterlogged blocks can't be re-waterlogged - low priority
 - pick block bugged for item proxied blocks - medium priority
 - blocks can't be assigned mining tool - medium priority
 - buckets janky - low priority
 - falling sand janky - high priority

feature ideas
 - farmable + edible water lettuce
 - new weapons
 - clam farming
 - add the mantis shrimp variants
 - fish farming

feature design points
 - aquarium building: players need to be able to capture mobs and possibly breed them
 - survival: drops, effects, hostility
 - keeping interest: mobs need to be useful to the player througout the game, items need to be unique and useful to high and low level players)
 - challenge: mobs need to have some challenge, keeping them, fighting them
 - intuitivity: everything must work either the same as vanilla or completely differently
 - grindyness: items must not be too grindy to get, but must also not make it too easy to get other things (like can't be too easy to find food)