Added raw windowing support, added example showcasing this

Cargo.toml

@@ -17,10 +17,9 @@ features = ["image", "ttf"]
 rodio = { version = "0.17.1", optional = true}
 vulkano = { version = "0.32.3", optional = true }
 gl = { version = "0.14.0", optional = true }
-
-[dev-dependencies]
 x11 = "2.21.0"
 
+
 [build-dependencies]
 ureq = {version = "2.6.2", features = ["native-tls"]}
 native-tls = "0.2.7"

examples/example_2.rs

@@ -5,6 +5,7 @@ use cat_box::{
     SpriteCollection,
 };
 use sdl2::keyboard::Scancode;
+use sdl2::sys as sdl2_sys;
 
 use std::ffi::c_void;
 use x11::*;