Support for packing/unpacking

[rohitjoshi]

Are you planning to add support for packing/unpacking?

[calio]

It is something that I've always want to do. And also RPC support. But from the experience of last year, I don't think I'll have time to do it soon. So patches are welcome : )

[bjne]

Have you had any opportunity to look at packing/unpacking? Size difference is quite substantial for some objects.