Removed redundant encryption and asserts
Merge branch 'mannol1-master'
Core should no longer attempt to send data faster than the links can
carry it.
Const correctness for toxcore/Messenger.c and related files
Const-correctness for toxcore/net_crypto.c
Const-correctness for toxcore/onion_announce.c
Const-correctness for onion.c
Const-correctness for onion_client.c
Fixed video in call sometimes freezing.

This should not happen anymore.
Const-correctness for TCP_client.c
Const-correctness for TCP_server.c
Const-correctness for tox.c
Merge remote-tracking branch 'upstream/master'
Updated some items in the TODO list.
Mulitcall support for static buffers
Merge branch 'const_correctness' of https://github.com/schuetzm/ProjectTox-Core
Fixed const related warnings.
Somewhat improved test
Merge remote-tracking branch 'upstream/master'
Post-merge fixes

Pointer types in group_announce.c, might be buggy still

Const correctness for util.{h,c}