Hello everyone!

This is deal.II newsletter #27.
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:

#6209: Fix documentation of SparsityPattern (proposed by masterleinad; merged) 
https://github.com/dealii/dealii/pull/6209

#6206: Improve assertions (proposed by drwells) 
https://github.com/dealii/dealii/pull/6206

#6205: doc: mention Kelly estimator in step-37 extensions (proposed by 
davydden; merged) https://github.com/dealii/dealii/pull/6205

#6204: Allow setup_astyle.sh to be used on macOS as well (proposed by 
masterleinad; merged) https://github.com/dealii/dealii/pull/6204

#6203: Guard blank line by HTML comment (proposed by masterleinad; merged) 
https://github.com/dealii/dealii/pull/6203

#6202: Convert data structures in MF::MappingInfo to a face-compatible variant 
(proposed by kronbichler) https://github.com/dealii/dealii/pull/6202

#6201: Separate a note from 'The commented program' (proposed by masterleinad; 
merged) https://github.com/dealii/dealii/pull/6201

#6199: fix changelog date format (proposed by tjhei; merged) 
https://github.com/dealii/dealii/pull/6199

#6198: make zero_out_ghosts() const (proposed by davydden; merged) 
https://github.com/dealii/dealii/pull/6198

#6196: Make a multigrid test more robust: Filter out small floats (proposed by 
kronbichler; merged) https://github.com/dealii/dealii/pull/6196

#6195: Use DEAL_II_ALWAYS_INLINE in SymmetricTensor (proposed by kronbichler; 
merged) https://github.com/dealii/dealii/pull/6195

#6193: Avoid using an alias variable. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6193

#6192: Add a necessary include file. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6192

#6191: Clarify a comment in FiniteElement. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6191

#6190: Extend documentation of contrib/utilities/setup_astyle.sh. (proposed by 
bangerth; merged) https://github.com/dealii/dealii/pull/6190

#6189: Mark a couple of functions as '[[noreturn]]'. (proposed by bangerth; 
merged) https://github.com/dealii/dealii/pull/6189

#6188: Add replicate_triangulation to GridGenerator #6159 (proposed by 
weixiong-zheng-berkeley) https://github.com/dealii/dealii/pull/6188

#6187: Fix name in static_assert. (proposed by luca-heltai; merged) 
https://github.com/dealii/dealii/pull/6187

#6186: Add realpath for those OS that do not implement it (proposed by 
luca-heltai) https://github.com/dealii/dealii/pull/6186

#6185: Remove more boundary references (proposed by drwells) 
https://github.com/dealii/dealii/pull/6185

#6182: Clone manifolds + std::unique_ptr in Tria (proposed by luca-heltai) 
https://github.com/dealii/dealii/pull/6182

#6181: Check the result of a dynamic_cast. (proposed by masterleinad; merged) 
https://github.com/dealii/dealii/pull/6181

#6180: Move dynamic_unique_cast to Utilities (proposed by masterleinad; merged) 
https://github.com/dealii/dealii/pull/6180

#6178: Added to_string and to_value (proposed by luca-heltai) 
https://github.com/dealii/dealii/pull/6178

#6177: New function for Jacobi polynomial evaluation and its roots (proposed by 
kronbichler) https://github.com/dealii/dealii/pull/6177

#6176: Use dynamic_unique_cast in more places (proposed by masterleinad; 
merged) https://github.com/dealii/dealii/pull/6176

#6175: Add glossary entry on dimensions. (proposed by bangerth) 
https://github.com/dealii/dealii/pull/6175

#6174: Use dynamic_unique_cast() where appropriate. (proposed by bangerth; 
merged) https://github.com/dealii/dealii/pull/6174

#6173: Fix a couple minor issues with #6161. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6173

#6171: Fix bug in patterns.h (proposed by luca-heltai; merged) 
https://github.com/dealii/dealii/pull/6171

#6170: Allow more digits for output in a few tests (proposed by masterleinad; 
merged) https://github.com/dealii/dealii/pull/6170

#6169: CMake: set policy in subdirectory (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/6169

#6168: Improve changelog entry for #6129 (proposed by tjhei) 
https://github.com/dealii/dealii/pull/6168

#6167: Add double word script (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/6167

#6166: contrib/makeofflinedoc.sh: Use https instead of http (proposed by 
tamiko; merged) https://github.com/dealii/dealii/pull/6166

#6165: Remove some unnecessary ';'s. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/6165

#6164: Remove double word typos. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/6164

#6163: Make using astyle for indenting a bit easier (proposed by masterleinad; 
merged) https://github.com/dealii/dealii/pull/6163

#6161: GridGenerator::extrude_triangulation overload (proposed by 
weixiong-zheng-berkeley; merged) https://github.com/dealii/dealii/pull/6161

#6160: Remove std_cxx11 from the doc folder (proposed by masterleinad; merged) 
https://github.com/dealii/dealii/pull/6160

#6155: Convert ReadWriteVector to std::unique_ptr. (proposed by bangerth) 
https://github.com/dealii/dealii/pull/6155

#6154: Fix some more issues discovered by Coverity (proposed by masterleinad; 
merged) https://github.com/dealii/dealii/pull/6154

#6153: Tests: Add an output variant for metis_01a for 64bit metis (proposed by 
tamiko; merged) https://github.com/dealii/dealii/pull/6153

#6152: Introduce dynamic_unique_cast. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6152

#6151: Pass const scalar arguments by value, rather than reference. (proposed 
by bangerth; merged) https://github.com/dealii/dealii/pull/6151

#6150: Make a cast explicit. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6150

#6149: Call find_package(PythonInterp) before find_package(PythonLibs) 
(proposed by Rombur; merged) https://github.com/dealii/dealii/pull/6149

#6148: Fix argument names. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6148

#6147: Reword a comment in make_array_view. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/6147

#6146: [WIP] Parallelize a few operations in the FE_Q_Base constructor. 
(proposed by bangerth) https://github.com/dealii/dealii/pull/6146

#6145: Microscopically small updates in a file I was reading through. (proposed 
by bangerth; merged) https://github.com/dealii/dealii/pull/6145

#6140: introduce LA::d::Vector::add_local() and sadd_local() to avoid to man... 
(proposed by davydden; merged) https://github.com/dealii/dealii/pull/6140

#6137: CMake: Only set CMP0037 to old for cmake older than 3.11 (proposed by 
tamiko; merged) https://github.com/dealii/dealii/pull/6137

#6128: Update documentation of FE_FaceQ/P. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6128

#6124: Fix VectorTools::integrate_difference() (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/6124

#6119: ScaLAPACKMatrix::pseudoinverse() (proposed by BenBrands; merged) 
https://github.com/dealii/dealii/pull/6119

#6118: doc: minor fixes in step-37 (proposed by davydden; merged) 
https://github.com/dealii/dealii/pull/6118

#6062: ScaLAPACKMatrix: add eigensolver routines using MRRR algorithm (proposed 
by BenBrands; merged) https://github.com/dealii/dealii/pull/6062


## And this is a list of recently opened or closed discussions:

#6208: Doxygen not showing all functions (opened and closed) 
https://github.com/dealii/dealii/issues/6208

#6207: A function for vertex reordering in 2d when generating cell (opened) 
https://github.com/dealii/dealii/issues/6207

#6200: Update `TriaAccessor::get_manifold` (opened) 
https://github.com/dealii/dealii/issues/6200

#6197: constness of zero_out_ghosts() vs update_ghost_values() in LA::d::Vector 
(opened and closed) https://github.com/dealii/dealii/issues/6197

#6194: Fix poor grammar (opened) https://github.com/dealii/dealii/issues/6194

#6184: Update the pictures and description of GridGenerator::hyper_shell. 
(opened) https://github.com/dealii/dealii/issues/6184

#6183: Rewrite the distorted cells glossary entry (opened) 
https://github.com/dealii/dealii/issues/6183

#6179: Rearrange error handling code so failed Asserts call a [[noreturn]] 
function (opened) https://github.com/dealii/dealii/issues/6179

#6172: Improve automatic differentiation documentation (opened) 
https://github.com/dealii/dealii/issues/6172

#6162: step-37: possible extension for Kelly (opened and closed) 
https://github.com/dealii/dealii/issues/6162

#6159: An efficient function to replicate triangulations for geometries with 
repeated unit structure (opened) https://github.com/dealii/dealii/issues/6159

#6158: Generalizing GridGenerator::extrude_triangulation to use non-uniform 
extrusion along z-axis (opened and closed) 
https://github.com/dealii/dealii/issues/6158

#6157: Minor changes to LinearIndexIterator (opened) 
https://github.com/dealii/dealii/issues/6157

#6156: 9.0 release preparations (opened) 
https://github.com/dealii/dealii/issues/6156

#6134: cmake 3.11.0 warnings  (closed) 
https://github.com/dealii/dealii/issues/6134

#4836: The 8.5.1 bugfix release (closed) 
https://github.com/dealii/dealii/issues/4836


A list of all major changes since the last release can be found at 
https://www.dealii.org/developer/doxygen/deal.II/changes_after_8_5_0.html.


Thanks for being part of the community!


Let us know about questions, problems, bugs or just share your experience by 
writing to dealii@googlegroups.com, or by opening issues or pull requests at 
https://www.github.com/dealii/dealii.
Additional information can be found at https://www.dealii.org/.

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