0.06 2019-01-02
 - Changes to address CVE-2018-18898 which could allow DDoS-type attacks.
   Thanks to Lukas Kramer for reporting the issue and Alex Vandiver for
   contributing fixes.
   - Fix pathological backtracking for unkown regex
   - Fix pathological backtracking in obs-phrase(i.e. obs-display-name)
   - Fix pathological backtracking in cfws, quoted strings
0.05 2014-02-16
 - Correct typos in documentation; no functionality changes
0.04 2014-02-03
 - Update minimum perl version to 5.10, because of use of ++ quantifier
0.03 2014-01-22
 - Include documentation updates present in the released version of
   0.01, but never checked into the repository
0.02 2014-01-15
 - Prevent a quadratic-time check when the provided string did not
   contain a valid address
0.01 2012-11-17
 - Initial release