v3.3.0
New features and bug fixes:
#303 - Add IsClosing() to client interface for mocking
#305 - Avoid panic on NTLMChallengeBind where bytes were less than 7
#306 - Add support for LDAP_SERVER_LINK_TTL_OID control
#316 - Network timeouts now return appropriate error message and code
#318 - RFC4532 WhoAmI support added