initial text impl

src/core/mod.rs

@@ -1,17 +1,17 @@
 mod frame;
 mod image;
-mod num;
 mod rect;
 mod sense;
 mod span;
 mod stack;
+mod text;
 mod trait_fns;
 
 pub use frame::*;
 pub use image::*;
-pub use num::*;
 pub use rect::*;
 pub use sense::*;
 pub use span::*;
 pub use stack::*;
+pub use text::*;
 pub use trait_fns::*;