Update to include MEAO voted Costumes

See merge request !19

Add endpoints that are shortcuts to specific types of MoonCat images

Closes #14 and #15

See merge request !14

Update documentation for developer setup

See merge request !17

# Conflicts:
#	CHANGELOG.md

Add logic to time out long requests

Closes #13

See merge request !12

# Conflicts:
#	CHANGELOG.md

Update request identifiers to allow JSON and PNG extensions

Closes #11

See merge request !13

# Conflicts:
#	CHANGELOG.md

Update to include MEAO voted Costumes

See merge request !9

Fix glow logic

See merge request !11

Add documentation for working with the Heroku CLI tool in a Docker context

See merge request !6

Change caching engine to handle asynchronous loads

Closes #8

See merge request !8

Add logic to rate-limit public requests

See merge request !7

Change the "clear the cache" API endpoint to just mark the cache as expired, without clearing the data from it

Add an addItemAsync method to the caching engine, and separate out the fetching/building promise and the actual value