Added the Zero and One traits to sigils.

It looks like these may be removed from the standard library soon.

src/lib.rs

@@ -2,11 +2,12 @@
 //! License: Proprietary
 //!
 //!
-#![feature(zero_one)]
 #![feature(float_extras)]
 #![feature(associated_consts)]
 
 
+mod zero;
+mod one;
 mod bounded;
 mod number;
 mod whole;
@@ -20,6 +21,8 @@ pub mod matrix;
 pub mod quaternion;
 
 
+pub use self::zero::Zero;
+pub use self::one::One;
 pub use self::number::Number;
 pub use self::whole::Whole;
 pub use self::integer::Integer;