This release changes the thread behaviour and msgpack, mainly.
The thread behaviour has changed in a way that it seems more natural.
Instead of binding values via Go conversion and back, it is now serialized using msgpack.
With these changes, upvalues can now be used in threads. Tables do not have to be manually converted, which was a small annoyance.
Msgpack now has a couple more changes to allow more serialization to be very simple and the result accurate.
Functions are now serialized with the upvalues of them taken care of.
Userdata also works fine now, but the implementation was a hack and needs a better way.
Unless you are serializing userdata in different threads at exactly the same time, there shouldn't be a problem, but watch out.
The LTN12 library from luasocket is now also included.