added underdeveloped but working image support (no freeing or samplers)

src/core/mod.rs

@@ -1,4 +1,5 @@
 mod frame;
+mod image;
 mod num;
 mod rect;
 mod sense;
@@ -7,6 +8,7 @@ mod stack;
 mod trait_fns;
 
 pub use frame::*;
+pub use image::*;
 pub use num::*;
 pub use rect::*;
 pub use sense::*;