[dev] Internal rewrite of the password conversion mechanism (now I actually understand what's going on here)
[dev] Add docblock info about AD's Modify DN operation and behaviour
[dev] Update docblock example for Link
[fix] Link unserialisation was broken
[fix] Fix php notice when unsetting serialised Link instances
[fix] Correct UAC::PasswdNotReqd capitalisation in code after 0ac9135

I was under the impression that I took care of this… sh?t.
[new] The Link::rootDSE() no longer performs anonymous bind and behaviour has also changed - make sure to check API documentation
[new] Stop checking for ldap v3 compatibility during Link instantiation

All AD implementations are ldap v3 compatible so there's no need for
this
[dev] Improve Link documentation
[new] The Link::rootDSE is now only loaded on first property access or by calling Link::rootDSE()