Assign flags to imported mesh geometries without a boundary handling

See merge request !487

New hash algorithm for Cell and Vector<int> objects

Closes #160

See merge request walberla/walberla!482

Add assertion for adding multiple Sweeps to a single SweepAdder object

See merge request walberla/walberla!486

pin lbmpy to specific version

See merge request walberla/walberla!490

increase cmake minimum Version to 3.14

See merge request walberla/walberla!485

GPU Communication Block Selectors

See merge request walberla/walberla!488

Fix: Fluctuating LBM

See merge request walberla/walberla!489

recent versions of cmake warn if the argument is not the same as the FindXXX.cmake name

See merge request walberla/walberla!483

Update new lbmpy version

See merge request walberla/walberla!481

add Intel OneApi compiler to CI

See merge request walberla/walberla!465

Revert !146: remove Su viscoelasticity

Closes #158

See merge request walberla/walberla!480

Documentation maintenance

See merge request walberla/walberla!479

remove allow-run-as-root in MPIEXEC_PREFLAGS it is handled via the environment variables in the docker images
check for intelclang or clang before checking for OpenMP bug

Delete Doxygen blocks duplicated in both .h and .cpp files.
Fix incorrect argument names in \param blocks. Fix filenames
in \file blocks. Fix broken Doxygen syntax (broken numerated
lists containing more than 9 items, invalid HTML tags, broken
links in \ref and malformed math equations). Wrap code blocks
inside \code ... \endcode.

Replace preprints by published papers. Fix author lists, page
numbers, capitalization in titles and journals. Add missing DOIs.

Improve portability of size_t and ptrdiff_t on recent compilers

Closes #157

See merge request walberla/walberla!478

Add virtual mass functionality to lbm-mesapd coupling

See merge request walberla/walberla!472