Rewrote audio packet queue.

Audio killing itself after 20 minutes in a call should be fixed.
Merge branch 'master' of https://github.com/mannol1/toxcore
Increased default jitter buffer size by 1.
Fixed some issues with queue.

disconnecting then reconnecting right away should no longer kill
audio transmission.
Fixed crash.
Start sequence number at zero instead of one.
Make codec settings dynamic
Fixed tests and conflicts