* Make all hitboxes rectangles
* Add sprite-based hitboxes for attacks, keep the original ones only for
map wall collisions
* Reorganize and rename animations
* Separate player movement and swing animation for the AoE
* settings.h: Global settings to play around with
* fixed.h: Utilites for fixed-point numbers (incomplete but clean)
* level.h: Storage format of levels (PROTOTYPE >9000)
* map.h: Dynamic format for loaded levels (PROTOTYPE)
* render.h: Camera management and rendering (pretty clean)