Remove unused options from CI build-and-test script.

See merge request nektar/nektar!1360

Reformat code with clang-format v11

See merge request nektar/nektar!1359

Parallelise pulse wave solver and tidy up communicators

See merge request nektar/nektar!1337

Update nektar-env to bullseye

See merge request nektar/nektar!1356

Fix/monterey compilation errors

See merge request nektar/nektar!1355

Fix the naming of wss field in the output of fieldConvert module

See merge request nektar/nektar!1352

Added ProcessCFL to the fieldUtils for FieldConvert for Inc flow

See merge request nektar/nektar!1332

Fix issue with NekMesh Python logger

See merge request nektar/nektar!1348

Updated Timer class to prevent wrong measurements

See merge request nektar/nektar!1347

Updated CHANGELOG.md for MR!1347, with one line for the library
and one line for the CFS. Changes are targeted for v5.2.0

Fixed typo, forgot backslash before underscore in name of variable.

Added documentation to the user guide about how to use the timers
in the compressible flow solver.

Rebase before merge

Changed timers with iolevel=3 to iolevel=10. This is not because these
timers are not important, but because we don't know the relative importance
of these timers at the moment. Therefore, we decided to put them at a high
iolevel to avoid them being printed by a user. Once we know move about which
functions that are important, we can set these iolevels to a more reasonable
value.

Removed a couple of timers.

Changed iolevel to 10 for some timers that we are not sure how
important they are for the moment. All timers with iolevel=10
are not necessarily unimportant, but their relative importance
is not clear for the moment, so we have decided to make them
iolevel=10 to avoid them being printed.

Fixed the output of the Timer class. Also changed so that the Timer class
output is disabled by default. It can be enabled by setting the IO_Timer_Level > -1
in the session file.

Also fixed a small syntax error in the PreconCfsBRJ class.

Added no output file module

See merge request nektar/nektar!1318

Tidy/std region matrix free

See merge request nektar/nektar!1328

Fix Excessive Output from 2.5D GetBndElmtExpansions method

See merge request nektar/nektar!1341