Inventory beta:
- Consumable items now stack in one slot, but normal items take one slot per item;
- Inventory now has capacity;
- If you try to pick more items than you can only free slots will be taken;
- Consumables now can be used by pressing "E" key;
- To disable items' affect press "TAB" key;

Warning: be careful with pressing keys because of there is no cooldown. (Required mongoose ability for pressing keys only once :D)