Log Message:
Update to 2.013:

2.013 2015/05/01
- assign severities to internal error handling and make sure that follow-up
  errors like "configuration failed" or "certificate verify \ 
error" don't
  replace more specific "hostname verification failed" when reporting in
  sub errstr/$SSL_ERROR. see also RT#103423
- enhanced documentation thanks to Chase Whitener
  https://github.com/noxxi/p5-io-socket-ssl/pull/26