0.2.3

Fix the &str example in the readme.

0.2.2

Update the readme to reflect the API change in 0.2.1

0.2.1

str is in core, so the std feature can be removed.

0.2.0

Increased ergonomics of the numtoa method to return a &[u8] instead of a usize.
Removed the restriction on only accepting &[u8; 20] for numtoa_str.

0.1.0

Added the std feature to add the numtoa_str method.
numtoa_str returns a &str rather than a usize.