Linked toxav in the main dependencies section.
Expose the tox_add_tcp_relay() function in the public api.

Clients can use this function to make Tox connect to user specified
TCP relays.
Fixed iOS possible SIGPIPE issue.

Apparently on iOS UDP sockets can SIGPIPE (what the fuck apple?).
Merge branch 'patch-6' of https://github.com/mouseym/ProjectTox-Core
Fixed typo.
Increased number of friends tested in tox_test.
Added custom packet functions to public tox api.

This should make it easy for people to use toxcore to power many
types of networked applications.
This fixes an issue where nodes could stay unannounced for certain
periods of time.

Online nodes should now be able to announce themselves continuously.
Updated docs.

Fixed possible issue in last commit.
Fixed typo.
Added tests for custom lossy and lossless packets.

Fixed bug with lossless packets.
Merge remote-tracking branch 'upstream/master'