Fix freeing children.
Add test to test freeing children.
Add NULL checks.
Merge branch 'develop' of https://github.com/gjb7/it276-zelda into feature/graphics
Added basic window.
Fix compiling with SDL2.
Import the correct file.
Add simple window test.
Add convenince function for initializing SDL.
Use new initialize function.
Add files to Xcode project.
Update install-dependencies.sh to install SDL2_image.
Fix incorrect package name.
Update Makefile for SDL2_image.
Add OSX SDL2_image framework.
Add convenience function to initialize image support.
Initialize image support.
Add sprite object.
Updated Xcode project.
Make sprite_free public.