* Change [] operator to .at() for vectors for proper error handling
* Use cin() instead of system("pause") for better cross-platform compatability
* Added libfreetype-6.dll, libjpeg-9.dll, libpng16-16.dll, libtiff-5.dll, libwebp-7.dll, zlib1.dll
Sprites would not center at initialization, instead only after changing a second time
Installer for adding Slang interpreter to 'Program Files' directory in Windows