Fixed so that the new avatars can wear hats

Added a penguin.

Added a slug; featuring an optional shell.

Added a ladybug.

Added an owl.

Made changes to the turtles walk animation.

Made changes to the birds walk animation.

Added a horse.

Added a panda.

Added a red panda.

Added a new hat.

Added a bat.

Added a cat.

Made changes to the raccoon's walk animation.

Added a bear.

Changed "frog hats" to "pet hats" and allowed all animals to wear them.

Added a new hat.

Made changes to the dog's walk animation.

Added a bird.

Added a turtle; featuring two kinds of legs to choose from: land and sea.

Added a black colour palette for the cricket.

Added a cricket.

Added a fox.