Shared resources useful for the multiple Habitica repositories, that way all the repositories remain in-sync with common characteristics. Includes things like:

Assets - sprites, images, etc
CSS - especially, esp. sprite-sheet mapping
Algorithms - level up algorithm, scoring functions, etc
View helper functions that may come in handy for multiple client MVCs
Item definitions - weapons, armor, pets

Compiling spritesheets

Because of some wonkiness with Heroku, the spritesheet compilation is not part of the production build process and must be done manually when new images are added by running:

grunt compile:sprites