Hello everyone! This is deal.II newsletter #123. It automatically reports recently merged features and discussions about the deal.II finite element library.
## Below you find a list of recently proposed or merged features: #10559: Remove DoFHandlerType from hp::FEValues templates. (proposed by drwells) https://github.com/dealii/dealii/pull/10559 #10558: Cleanup DoFTools hp::DoFhandler (proposed by masterleinad) https://github.com/dealii/dealii/pull/10558 #10557: Remove DoFHandlerType from FEValues templates. (proposed by drwells) https://github.com/dealii/dealii/pull/10557 #10555: Remove DoFHandlerType from dof_handler_policy.h/.cc (proposed by peterrum) https://github.com/dealii/dealii/pull/10555 #10554: Small generialization in tria_description.cc (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10554 #10553: Update output of tests/grid/grid_tools_cache_04 (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10553 #10552: Simplify CellAccessor::at_boundary() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10552 #10551: Remove usused internal function (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10551 #10550: Fix detection of muParser 2.3.2. (proposed by drwells) https://github.com/dealii/dealii/pull/10550 #10549: Use neutral terminology where possible (proposed by jppelteret) https://github.com/dealii/dealii/pull/10549 #10547: Avoid accessing artificial cells in ParticleHandler (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/10547 #10546: work around clang10 warnings (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/10546 #10545: introduce GridTools::cell_measure for std::vector (proposed by tjhei) https://github.com/dealii/dealii/pull/10545 #10543: Fix missing instantiations for point_gradient (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/10543 #10542: Pass number of vertices to CellData (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10542 #10541: Specify std namespace (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10541 #10540: fix bug in fast version of GridTools::find_active_cell_around_point() (proposed by nfehn) https://github.com/dealii/dealii/pull/10540 #10539: Do not use 'black/whitelist' language. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/10539 #10538: Remove DoFHandlerType from MatrixFree::reinit() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10538 #10536: Particles as indexable. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/10536 #10534: [9.2] Takeover #10533: Add a missing contributor to a changelog entry (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/10534 #10533: Add a missing contributor to a changelog entry (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/10533 #10532: Emit warning when AppleClang < 9.0 is detected (proposed by jppelteret) https://github.com/dealii/dealii/pull/10532 #10529: Fix number_cache.ghost_owners (proposed by peterrum) https://github.com/dealii/dealii/pull/10529 #10528: Use active_cell_index() in KellyErrorEstimator::estimate() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10528 #10527: Check in GridRefinement::refine()/coarsen() if cell is locally owned (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10527 #10526: Fix hp_choose_p_over_h test (proposed by peterrum) https://github.com/dealii/dealii/pull/10526 #10525: Enable non-default VectorizedArrayType in read_cell_data() (proposed by DavidSCN; merged) https://github.com/dealii/dealii/pull/10525 #10524: Remove MGCoarseGridLACIteration (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/10524 #10523: Thread/Task: Fix Schmidt's double checking (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/10523 #10520: Clarify docu of GridTools::find_active_cell_around_point() (proposed by nfehn; merged) https://github.com/dealii/dealii/pull/10520 #10516: Merge implementations of exchange_cell_data_to_(level)_ghosts (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/10516 #10481: MGTransferPrebuilt custom constraints test (proposed by tcclevenger; merged) https://github.com/dealii/dealii/pull/10481 #10363: GridTools::Cache::get_locally_owned_cell_bounding_boxes_rtree() (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/10363 #10334: Split up MatrixFree::initialize_indices to speed up compilation (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/10334 ## And this is a list of recently opened or closed discussions: #10556: PETScVectorBase::max and ::min are currently deprecated (opened) https://github.com/dealii/dealii/issues/10556 #10548: muParser module doesn't work any more (opened) https://github.com/dealii/dealii/issues/10548 #10544: How to implement moving mesh (opened) https://github.com/dealii/dealii/issues/10544 #10537: Boost signals overkill for particle_lost()? (opened and closed) https://github.com/dealii/dealii/issues/10537 #10535: Improve design of GridTools::find_active_cell_around_point() (opened) https://github.com/dealii/dealii/issues/10535 #10531: shared_timed_mutex not available on older versions of MacOS (opened) https://github.com/dealii/dealii/issues/10531 #10530: Redefinition of CellAccessor::active_cell_index() (opened) https://github.com/dealii/dealii/issues/10530 #10459: Clarify expected behavior of GridTools::find_active_cell_around_point() (closed) https://github.com/dealii/dealii/issues/10459 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. Thanks for being part of the community! Let us know about questions, problems, bugs or just share your experience by writing to firstname.lastname@example.org, or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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