Send a presence error from the room, when receiving command ERR_BADCHANNELKEY

fix #2886

Include the optional <text/> node in the send_presence_error

Remove a line from a WIP that should not have been added

Do not send an “not-implemented” error when receiving an iq error

Auto accept presence subscription

ci: make it two uploads and flag them (e2e, and test_suite)

ci: upload our own total_coverage.info to codecov

Is a lot faster, and is more consistent

Run codecov upload from the root directory

Do not change the nick when joining a second room with a different nick

As the doc says, the nick changes must be explicit in an already joined
room, and not when joining a room.

Add a None type for the Iid class (when the iid is completely empty)

ci: sonar-qube upload is allowed to fail

Add a codecov.yml  file to ignore the tests/ directory

Add a make coverage target to merge all other coverages, and upload to codecov

ci: Do not try to gem install coveralls-lcov

Upload the coverage results to coveralls

Do not remove the .info generated by lcov

Properly convert the data into a number of seconds by using duration_cast

The logger writes to std::clog

The config module doesn’t use the logger at all

Use an other implementation of a null_stream for the logger