Replaced PacketDelta with PacketDelta, PacketDeltaClient and PacketFragment. Doesn't compile.
Fixed to compile with new packet types. Lots of TODOs.
Removed some todos. Fixed some tests.
Removed unused constructor.
More fleshing out.
Added more fragment tests.
Fixed fragmenting packets an exact multiple of the max packet size.
Pass all Packet unit tests.
Turns a static function into a constexpr one instead.
Fixed to compile. Still a broken work in progress.