[Core] Added Isometric Map support;
[Core] Added Path StripExtension and fixed ChangeExtension;
[Core] Fixed SFML Renderer ignoring window styles;
[Core] Made it so that TexturePacker's Textures have a transparent border rather than white colored;
[Packer] Added Extract option for packages;
[TiledConverter] Added some WIP code for multiple tile sizes and Margin/Spacing of tilemaps;