gistfile1.txt

Multiple users
Multiple boards
Boards can be opened/closed
Each board can have multiple lists
Each list can have multiple cards
Each card has a title and a description
Each card can have comments
Each card can have multiple users assigned to them
Each card can have multiple labels assigned to them
Each card can have a due date
Cards can be moved between lists, or boards
Cards can be ordered in each lists
Cards can be opened/closed
Notify users when a card is assigned to them
Notify all users that are assigned cards in a board when it gets closed
Notify all users that are assigned cards in a list when it gets deleted
Any User can open/close a board/card
Any User can create/delete a list
A User can favorite a board