Fix some little compilation errors with some configs, from last commit

Support the ident protocol

fix #3211

Add missing cstring include for strerror

Move all the connect() logic from TCPSocketHandler into a subclass

This way, TCPSocketHandler only deal with the message sending/receiving, not
the connect() or anything else.  This will be used for implementing servers
(because when a client is accepted, we don’t need all the connect() and dns
resolution stuff).

Update the doc to say that we support xep 0059

Start version 5.0

Release version 4.0

Little update to the changelog

Remove a never reached (and non-sensical) error

Test the error on joining invalid room

Workaround for debian and other old OS that do not have std::put_time

Add <algorithm> back

Add a missing <chrono> include

Trivial refactor of get_user_bridge function

Add get-irc-connection-info adhoc command

fix #3171

Test the global and IRC server configure commands

Fix the presences sent, when multiple resources join the virtual channel

fix #3216

Refactor load_certs()

Disable e2e tests on openbsd

And fix the bw-output path…

[skip-ci]