add api function to get group title
Increased audio packet queue size by 2.
Merge branch 'get_group_title' of https://github.com/JFreegman/toxcore
Some modifications to the last pull request.
Setting groupchat title when the groupchat isn't connected should
now return success.
Last fix didn't really work well.

This one should work better.
Added an unfinished doc on how groupchats work.
Cut bitrate by half for 1 channel audio.
av refactor
Decrease time to announce ourselves to 3 seconds.
Small update to groupchat docs.
get peer pubkey api
Fixed small issue where group audio would jumble up sometimes at start of stream.
Tox clients now should show they are offline with much better precision.
Merge branch 'peerpk' of https://github.com/dubslow/toxcore
Cleaned up packet length types in toxcore.

They are now all uint16_t instead of sometimes being uint32_t.

Replaced some other uint32_t with unsigned ints.
Enable use of lower sample rates for group chats.
Updated TODO.
Removed some no longer promising clients from the TODO.
Merge branch 'master' of https://github.com/mannol/toxcore