Add inventory.
Refactor sprite stuff into a sprite sheet.

Keep around some basic sprite stuff for simple rendering of graphics.
Use sprite sheets.
Implement functions to check for and give items.
Add missing include.
Add more defaults.
Add an inventory to the player.
Add inventory hud.
Add empty hud sprite.
Add function to insert an entity below another entity.
Finish implementation.
Add function to get the inventory.
Add function to render a sprite at a point.
Add a hud.
Insert map below the hud.
Add function to draw a frame at a point.
Add selected item field.
Add hud font spritesheet.
Draw font.
Merge branch 'develop' of https://github.com/gjb7/it276-zelda into feature/inventory

Conflicts:
	extras/zelda.xcodeproj/project.pbxproj
	src/player.c
	src/player.h