This is a change to how packets are transferred; the API has not been changed.
While the difference may be unnoticable when using unencrypted packets, because of MessagePack's compact size and better handling of byte values encrypted packets should transfer faster.
The Download group of packets was in desperate need for a restructuring.
Now, instead of using `DownloadServerList` to list everything, different object types now are downloaded through their own seperate packets. (Improving network efficiency)
