* REAL unit tests
* Proper ActiveRecord duck-typing
* Add Schema2#equality(attr) to Schema2
* Add seamless delete/add when required
  - structural objectclass change
  - dn change
* Figure out how to deal with Relative DNs
* Remove configuration.rb. Parse the local
  ldap.conf file (/etc/ldap.conf or /etc/ldap/ldap.conf).
