Version 0.2.0 Release 0
Compatibility with Authenticator class (refs #4039)

- Corrected askAuthentication() and logout() to respect prototype
  defined by Authenticator class.
Refactored phpCAS client init and added parameters (refs #4041)(refs #4040)

- Added parameter "cas_debug" => "yes"|"no" (default "no")(refs #4041)
- Added parameters for SSL version and CAS CA/server certs (refs #4040)
    "cas_sslversion" => 2|3, // default = <empty>
    "cas_servercert" => $path_to_cas_server_cert, // default = no check certificate
    "cas_servercacert" => $path_to_cas_ca_cert, // default = no check certificate
Compatibility with phpCAS-1.3.2 (refs #4026)

- Updated bundled phpCAS to 1.3.2
- Updated code to work with phpCAS-1.3.2
- Removed deprecated "cas_servercert" parameter
Merge pull request #2 from eguaj/0.2-integration

Version 0.2.0 Release 0 (closes #4039)(closes #4040)(closes #4041)(closes #4026)