oωo (owo-lib)

This release is primarily a (preliminary, hence beta) port of 0.12.6. However, prompted by the game's networking changes and further reliance on attaching registry references to serialization infrastructure, there have been major internal reworks to both the Networking API and Endec. The majority of these changes are transparent to users, with the exception of the occasional requirement to pass a SerializationContext into Endec methods (the documentation will be updated accordingly).