0.13: Ask to continue when certificate could not be verified instead of just aborting.
0.14: Fixed some bugs concerning quoting.
0.15: Fixed a bug: non-existence of certfile was not noticed if a file with this name is in the current directory because jnc changes to $ncdir afterwards.
0.16: Print help message if certificate couldn't be downloaded.
0.17: Fix: support extracting common name from certificate for legacy implementations where an electronic mail address is embedded in the subject distinguished name as an emailAddress attribute. See RFC 5280, section 4.1.2.6.
0.18: Added option for signinurl. Optimized openssl command for extracting the certificate subject.
0.19: Added support for wildcard certificates.
0.20: Added functionality for usage with Pulse Secure instead of Network Connect.