function to get random alphanumeric strings
clicking play button creates new character in database, generates a random url, and redirects to it
sign in via the random url
redirect to home if someone goes to an unknown game url
add spirit component, set to true when creating a new character
seed the randomization for url generation
add skill component at character creation
need a body to buy things
fix 'inventory' command when an entity has no limbs component
don't include spirits when listing characters in a room
update remove command wrt spirits
update score/sell for spirits
update skills/train for spirits
update 'wear' command for for spirits
don't inform other characters of spirit's comings and goings
race incarnation costs
make abilities usability a boolean function
add a way to create 'help' categories that aren't directly on another entity
update incarnation/races help
'use' command