[dev] Next time I should remember to make the repo actually PSR-0-compatible before implementing PSR-0 autoloading
[dev] Override the msExchMailboxGuid attribute class
[dev] Fix apigen configuration after 9b8e982, again!
[new] Epic feature - First draft of user management and Exchange support

It's working, I just need to take care of some edge cases like trying
to create a new mailbox when there already is a mailbox present and
similar. Looks awesome so far!