30-05-2013: release version 0.03
- Fix plugin-check-helo.html
- spec: Update and bump to version 0.03
- Update plugin-check-helo.html
- Update README
- Add match_ipv4 function, implement $HELO_CHECK_REMOTEIP and
  $HELO_CHECK_REMOTEIP_MATCH
- Add init_HostDNSIP function, redo struct HostDNSIP and free_HostDNSIP
  function
- Remove a space
- Implement support environment variable $HELO_CHECK_VERBOSE

25-05-2013: release version 0.02
- Add define macro MAX_DNSIP_RECORDS default to 10 if not define and update
  function check_hostname to have this limit

24-05-2013: release version 0.01
- Initial release
