panics panics everywhere

[SpamapS]

The library should document any necessary panics and otherwise eliminate lazy use of .unwrap().

[SpamapS]

The only unwraps left are in rustygeard, and are all unwrapping locks. We want those to panic as if one thread panics while holding the lock, we want the waiters to panic too.

We did leave some locks in the client library using expect, instead of unwrap, but they explain themselves and make sense, mostly because of locks or the way we've configured things.