0.04 2013-02-06
        - Introduce a secure signature string
          compare to prevent timing attacks.

0.03 2013-02-05
	- Small documentation improvements.
	- Small speed improvements in signing.
	- Fixed bug in &_emLen.

0.02 2013-02-05
        - Tiny speed improvements.
	- Documentation tweaks.
	- Make code slightly more secure
          (do not accept nan for number values).

0.01 2013-02-04
        - Initial submission to GitHub.
        - Initial submission to CPAN.