Bump version number
Convert Result to Option in parse_bytes.

`str::from_utf8` changed its return type to `Result`, but
`num::FromStrRadix::from_str_radix` still returns an `Option`. In this case
discarding the `Err` variant with `ok()` seems fine to me.
Fix Ordering import
Merge pull request #43 from zsiciarz/master

Update to latest rustc
Fix build warnings
Update documentation links