Forward iq version results to IRC

Correctly do the error handling when we receive an iq

Forward CTCP version request to XMPP

Implement next_id() to

Use epoll on linux by default, poll otherwise

Link with systemd instead of systemd-daemon

Add missing std::string_literals

Fix a little indentation

Use C++14 string_literals

Remove binary.hpp and use the c++14 feature 0b

Upgrade to C++14

Include the xhtml-im element in private messages too

The author name from messages from the server are now nicely formated

NOTICE from channels are displayed in the channel, with a green "[notice]"

Respond to a disco query the gateway jid itself

Fix the kick by correctly using the from and to attributes

Fix the CMakeLists.txt to correctly have -Ibuild/src/

The logging test is less ambiguous

Improve the test on jidprep

test.cfg file is now created by the test suite