Production ready

Includes documentation improvements and a few bug fixes, the most important of which will allow sending objects with circular references. If you attempted this previously you would never see it logged out and instead it would just repeatedly ask you to authenticate even when your credentials were correct.

Why still beta?

Even though this is still marked as a beta it's been in the wild long enough that I feel confident the code is production ready. The only reason I haven't moved beyond beta is because there's still another feature or two I wanted to drop in before making the 1.0 release official. But for all intents and purposes, consider this official.