Version 0.4.0

What's Changed

• Remove references to uf_geometry.h in cmakeFindUFC.cmake by @IgorBaratta in #1551
• Allow user to supply form constants and coefficients to assemblers by @garth-wells in #1553
• Fix geometry dimension to 3 in assembler by @garth-wells in #1555
• Store C code from FFCx JIT by @michalhabera in #1556
• Update version by @chrisrichardson in #1554
• Gmsh bump + src install by @jorgensd in #1559
• Avoid splitting of Expression::eval functionality across two files by @garth-wells in #1560
• Template over block size for common cases for vector (RHS) assembly by @garth-wells in #1552
• Add --init to lab instruction by @jhale in #1561
• More vector functionality by @chrisrichardson in #1566
• Allow control over mesh graph re-ordering by @garth-wells in #1567
• Support re-ordering of cells by @garth-wells in #1571
• Move DOF transformations out of kernel by @mscroggs in #1568
• Update FFCx branch for CI by @garth-wells in #1573
• Avoid creation of spans in tight loops by @garth-wells in #1574
• More reference use and performance improvements by @garth-wells in #1575
• Use fixed-with Numpy integer types by @garth-wells in #1578
• Fix for Intel classic compiler by @garth-wells in #1579
• Bump dependency versions in Dockerfile by @garth-wells in #1576
• Residual0 now initialized for residual method. by @jorgensd in #1581
• Expose dof permutation bools by @jorgensd in #1580
• Just warn about topology instead of throwing error by @chrisrichardson in #1584
• Update spack instructions by @chrisrichardson in #1583
• Simplify tabulation through dolfinx::FiniteElement by @jorgensd in #1565
• Update element interface by @mscroggs in #1582
• Performance updates for pull backs by @garth-wells in #1588
• Template la::Vector over allocator by @IgorBaratta in #1587
• Fix array2d for USM allocators by @IgorBaratta in #1589
• Revise forward and reverse scatter in IndexMap by @garth-wells in #1594
• Remove the 'symmetric' neighbourhood communicator from IndexMap by @garth-wells in #1595
• Correct indexing (fixes #1597). by @garth-wells in #1599
• Reduce number of GPS re-ordering passes for mesh cells by @garth-wells in #1600
• Cleanup helmholtz demo by @jorgensd in #1601
• Add MPI_Type_dup to copy and move by @chrisrichardson in #1602
• Simplification in IndexMap for scattering by @garth-wells in #1605
• Fix domain id of refined meshes by @IgorBaratta in #1604
• Expose set_update in newton-solver by @jorgensd in #1606
• Add test for "RTCF" elements by @jpdean in #1607
• Only push real32 docs by @mscroggs in #1608
• Expose map pull_back and test it with dolfinx.Expression by @jorgensd in #1590
• Permit only required data to be passed to IndexMap scatters by @garth-wells in #1609
• Get entity closure dofs from ffc rather than recomputing by @mscroggs in #1586
• Update KaHIP version and build by @garth-wells in #1614
• Fix KaHIP test by @IgorBaratta in #1615
• Push docker images with tag prefix by @mscroggs in #1611
• Fix misunderstanding of MPI dist graph comm reordering by @garth-wells in #1617
• Fix Docker builds by @jhale in #1619
• Jhale/fix docker end user build by @jhale in #1620
• Jhale/fix docker end user build by @jhale in #1621
• Jhale/fix docker end user build by @jhale in #1624
• Jhale/fix docker end user build by @jhale in #1625
• Jhale/fix docker end user build by @jhale in #1627
• Jhale/fix docker end user build by @jhale in #1628
• Modernise HDF5 detection via cmake by @garth-wells in #1630
• Add radix sort and argsort (lexicographic) by @IgorBaratta in #1622
• Dependency version bumps in Dockerfile by @garth-wells in #1631
• Update Dockerfile to clang-12 by @garth-wells in #1632
• Use radix sort in dofmap construction by @garth-wells in #1633
• Fix llvm version for Numba by @garth-wells in #1634
• Increase storage size of ARM Docker builder by @jhale in #1635
• Change runner AMI to Ubuntu-based image by @jhale in #1636
• Images now called latest-openmpi and latest-mpich by @jhale in #1637
• Bump CI clang version by @garth-wells in #1638
• Add explicit :latest tag by @jhale in #1640
• Add :latest tag to Dockerfile instructions by @jhale in #1643
• Remove duplicated code for ParMETIS and KaHIP and general partitioning improvements by @garth-wells in #1639
• Reuse sort code in "Build dual graph" by @IgorBaratta in #1642
• Various MPI improvements by @garth-wells in #1645
• Fixes for the new Intel Compiler by @IgorBaratta in #1646
• HHJ/Regge Biharmonic Integration Tests by @jhale in #1644
• Add workflow_dispatch for Spack CI by @garth-wells in #1647
• Modify Spack CI by @garth-wells in #1650
• Add missing overloaded BBox collisions method by @nate-sime in #1629
• Make checkout refs explicit by @jhale in #1654
• Use GitHub checkout in more places by @jhale in #1656
• Update Basix interface to allow variants by @mscroggs in #1651
• Update Catch2 version by @garth-wells in #1657
• Remove references to legacy Intel compiler by @garth-wells in #1658
• Remove some legacy code for finding PETSc. by @garth-wells in #1659
• Dockerfile updates by @garth-wells in #1660
• Remove interpolation code by @mscroggs in #1661
• Update name of CMake variable in message string (HDF5) by @garth-wells in #1663
• Faster way of fetching tdim by @michalhabera in #1665
• Bump Ubuntu base image to 21.04 by @garth-wells in #1664
• LLVM 12 for Ubuntu 21.04 by @jhale in #1668
• Try LLVM-9 by @jhale in #1669
• Bump min CMake version to 3.16. Earlier versions are not tested. by @garth-wells in #1666
• Only create entities and permutation info for facet integrals when needed by @mscroggs in #1672
• Avoid computing mesh permutations when not required by @garth-wells in #1674
• Update viz CI test by @garth-wells in #1678
• Remove topology functions that shouldn't be used by @garth-wells in #1675
• Revise HDF5 detection - use hd5-config.cmake when available by @garth-wells in #1677
• Pin numpy to numba compatible version by @jorgensd in #1682
• Update versioning by @chrisrichardson in #1686
• Support detection of Basix library in Python tree by @garth-wells in #1690
• CI updates for Basix build change by @garth-wells in #1691
• Spack doc update on README.md by @garth-wells in #1679
• Doc link fixes by @garth-wells in #1692
• Encapsulate petsc4py and mpi4py detection in CmakeLists.txt file by @garth-wells in #1687
• Merge Docker image build into one workflow. by @jhale in #1696
• Only need one badge for Docker images. by @jhale in #1697
• Discontinuous elements by @mscroggs in #1670
• Fix docker action syntax. by @jhale in #1698
• Fix docker caching. by @jhale in #1699
• Enable xfailed test by @mscroggs in #1701
• Use (cell, local_facet_index) pairs for exterior and interior facet integral assembly by @jpdean in #1700
• Remove xtensor-linalg dependency by @IgorBaratta in #1703
• Add missing header by @garth-wells in #1704
• Prism cell mesh by @chrisrichardson in #1707
• Fix Timer documentation by @IgorBaratta in #1705
• Add missing set_bc call by @jhale in #1710
• Refactor create topology by @chrisrichardson in #1711
• Correct DOF transformations for dS integrals by @mscroggs in #1712
• Add more documentation and comments to topology creation by @garth-wells in #1714
• Faster symmetry tests by @mscroggs in #1715
• Remove strings from DOLFINx <-> Basix cell type conversion by @mscroggs in #1709
• Replace lattice type with Lagrange variant by @mscroggs in #1716
• Use vector instead of set in basix API by @chrisrichardson in #1718
• Correct offset computation for reordering by @chrisrichardson in #1717
• Pyvista updates by @jorgensd in #1719
• Pyvista version bumps to match pypi by @jorgensd in #1720
• Use array/int in place of array2d for packed form coefficients by @garth-wells in #1721
• Remove array2d class by @garth-wells in #1722
• Remove left-over MPICH work-around by @garth-wells in #1713
• Simplify pybind11 vector/array wrapper by @garth-wells in #1724
• Compress index map by @jorgensd in #1680
• Remove calls to xt::broadcast in interpolation by @IgorBaratta in #1727
• Support passing of form coefficients to assemblers from Python by @garth-wells in #1728
• Completely remove xtensor blas by @IgorBaratta in #1732
• Update PETSc/SLEPc to 3.16.0 in Dockerfile by @garth-wells in #1734
• Improved form creation error checking by @garth-wells in #1737
• Remove in-place MPI calls by @garth-wells in #1738
• Fix CMake Basix detection by @garth-wells in #1733
• Tweaks for building wheels by @jhale in #1740
• Interpolation between functions from different spaces by @IgorBaratta in #1742
• ADIOS2 support (VTX and Fides) by @jorgensd in #1655
• Return span from la::Vector by @garth-wells in #1750
• Fixing doc strings by @massimiliano-leoni in #1730
• Clean up extraction of spaces and boundary conditions for blocked problems by @garth-wells in #1754
• Support multiple types in Python interface by @garth-wells in #1749
• Use element names consistently by @garth-wells in #1758
• Update for ufc interface without ufc_scalar_t by @chrisrichardson in #1752
• Restore CI by @chrisrichardson in #1759
• Add complex Jupyter Notebook specification by @jhale in #1756
• Fix sparsity pattern creation in python by @jorgensd in #1762
• Reshape pack coefficients to be num_cells by cstride in python by @jorgensd in #1763
• Minor MPI improvements by @garth-wells in #1760
• Bump base and package versions in Dockerfile by @garth-wells in #1768
• Spack test fixes by @garth-wells in #1769
• Some span const improvements by @garth-wells in #1770
• Fix url of INSTALL by @tkoyama010 in #1771
• Install MPI manually in Dockerfle by @garth-wells in #1772
• Avoid copies in an interface to Basix by @garth-wells in #1774
• Avoid unnecessary shared_ptr by @garth-wells in #1777
• Simplify and optimise geometry maps by @garth-wells in #1775
• Be explicit with string literals by @garth-wells in #1778
• Add test that fails if default CoordinateElement is not equispaced by @mscroggs in #1779
• Set default coordinate element type to equispaced by @mscroggs in #1780
• Update Basix quadrature interface by @mscroggs in #1783
• Add [[maybe_unused]] to variables unused in "Release" mode. by @jorgensd in #1784
• Fixes #1785 by @jorgensd in #1787
• Remove copying from recursive geometry functions by @jorgensd in #1751
• Apply iwyu suggestions by @IgorBaratta in #1790
• Raise exception when attempting to locate dofs geometrically in a mixed element by @garth-wells in #1789
• Bump some versions in Dockerfile by @garth-wells in #1793
• Add correct number of nodes to return type of empty boundingbox tree collision computation. by @jorgensd in #1794
• Try fixing pyvistaqt by pinning version by @jorgensd in #1795
• Avoid importing cpp in demos (almost) by @garth-wells in #1796
• Use built-in pybind11 function to get string for a cell enum by @garth-wells in #1797
• Function name improvements to reflect what some functions do by @garth-wells in #1799
• Correct order of args in pybind by @mscroggs in #1801
• Use standard terminology for pull back/push forward by @garth-wells in #1802
• Interpolation for elements with different Piola maps by @mscroggs in #1798
• Implement Gibbs-Poole-Stockmeyer graph re-ordering by @chrisrichardson in #1804
• Fix places where data is only used in assertions, causing -Wall -Werr -pedantic to fail in Release mode by @jorgensd in #1807
• Remove Boost graph ordering by @garth-wells in #1808
• Remove references to mailing lists on README by @garth-wells in #1809
• Use interpreter variable passed to cmake to find python modules by @renefritze in #1782
• Remove cout by @jpdean in #1812
• Make PT-SCOTCH an optional dependency by @garth-wells in #1810
• Remove interpolate() function from Basix by @mscroggs in #1811
• Call H5Oget_info_by_nameX directly for HDF5 by @garth-wells in #1813
• Remove stray header by @chrisrichardson in #1817
• Updates for Basix element maps by @garth-wells in #1819
• Turn on tests of more spaces by @mscroggs in #1818
• Simplify interpolation in FE interface by @garth-wells in #1820
• Update for Basix interface by @garth-wells in #1821
• Pack coefficients only for the active entities for each kernel by @jpdean in #1800
• Get dolfinx_jit_parameters.json location from envvar by @matsievskiysv in #1822
• Clean up some old code by @garth-wells in #1824
• Support ParMETIS partitioning when some ranks have no data by @garth-wells in #1823
• Remedy errant boost behaviour by @chrisrichardson in #1826
• Documentation text fixes by @garth-wells in #1825
• Remove avg from tests by @mscroggs in #1827
• Fix parhip build error by @jorgensd in #1828
• Simplify packing coefficients by @SarahRo in #1831
• Progress towards removing import of cpp in user and test code by @garth-wells in #1805
• Add diagonal enum for RectangleMesh by @jorgensd in #1836
• Consistent method/property name for accessing the MPI communicator for an object by @garth-wells in #1838
• Use std::int8_t in place of bool for bc vectors by @garth-wells in #1839
• Fix Docker action for API update by @jhale in #1841
• Don't pass permutation info into interior facet integrals by @mscroggs in #1837
• Fix Docker action by @jhale in #1842
• Build Linux x86_64 binary wheels by @jhale in #1815
• Optimise coefficient packing for block size = 1, 2 3. by @garth-wells in #1843
• Update refinement docs by @jorgensd in #1835
• Assert cast from specific Python int to int32 is safe by @jhale in #1840
• Simplify interpolation following changes to Basix and FiniteElement interfaces by @garth-wells in #1844
• Re-enable pybind11/eigen test. by @garth-wells in #1846
• remove ufc_blocked_element by @mscroggs in #1849
• Revert some change to refine by marker by @garth-wells in #1852
• Add test of vector element by @mscroggs in #1848
• Document shapes of in/out inputs in FiniteElement by @mscroggs in #1850
• Expose some functionality from cpp layer and assembly. by @jorgensd in #1855
• Remove la::VectorSpaceBasis and isolate PETSc functions by @garth-wells in #1856
• Fix refinement and add tests for sub refinement by @jorgensd in #1861
• Add GitHub funding by @jhale in #1860
• Enable setting of graph partitioner used in cell partitioning from Python by @garth-wells in #1862
• Add more control over making SCOTCH optional by @garth-wells in #1865
• Simplify MPI and petsc4py casters by @jhale in #1863
• Add isort configuration and non-blocking CI step by @jhale in #1864
• Import some graph functions into Python module by @garth-wells in #1866
• Add non-blocking clang-format call to CI by @jhale in #1867
• Missing 3 in libeigen3-dev by @jhale in #1868
• Change dead petsc link to petsc4py docs by @jorgensd in #1871
• Fix for IndexMap segmentation fault by @jpdean in #1870
• Update link to C++ docs by @ageorgou in #1874
• Add H(curl) curl-curl eigenvalue test by @jhale in #1649
• RedHat-like test environment by @jhale in #1869
• Bump PETSc, SLEPc and OpenMPI versions in Dockerfile by @garth-wells in #1877
• Remove more 'private' cpp interface from Python demos/tests by @garth-wells in #1878
• Put fem-related PETSc functions into separate namespace by @garth-wells in #1876
• Try SonarCloud (experiment) by @jhale in #1880
• Fix potential out-of-bounds error, not built locally. by @jhale in #1882
• Fix #1558 by @jorgensd in #1879
• Revert "Fix #1558 (#1879)" by @jorgensd in #1886
• Remove PETSc Vec from fem::Function by @garth-wells in #1885
• Rename mesh generation functions by @jhale in #1884
• Fix various bugs reported by sonarcloud by @jorgensd in #1881
• Update docker basic test to make images build by @jorgensd in #1891
• Fix GJK loop access by @jorgensd in #1892
• Test new sonarcloud flags by @jorgensd in #1893
• Add simple test for vector assembly using different types (Python) by @garth-wells in #1888
• Fix pullback on manifold and add test by @jorgensd in #1890
• Change create_rectangle to take two dimensional points by @jhale in #1894
• Fix ranges of function data in pyvista demo by @jorgensd in #1897
• Add interpolation callable shape checks by @garth-wells in #1896
• Issue compile time error if data type is not supported (MPI) by @IgorBaratta in #1902
• Implement DOF permutations for VectorElement by @mscroggs in #1901
• Flatten geometry storage by @garth-wells in #1899
• Fix #1558. by @jorgensd in #1898
• Refactor DirichletBC by @jorgensd in #1883
• Update special functions tests by @jorgensd in #1900
• Allow BCs to be set with literals and arrays by @garth-wells in #1905
• Fix return type for la::Vector::norm by @garth-wells in #1906
• Interpolation of ufl expressions by @jorgensd in #1875
• Consolidate PETSc linear algebra wrapper into single h/cpp files by @garth-wells in #1904
• README badge update by @garth-wells in #1908
• Replace confusing legacy FiniteElement::value_dimension with FiniteElement::value_shape by @garth-wells in #1910
• Convert std::vector to std::vector<int8_t> by @IgorBaratta in #1911
• Remove unused function arguments in bc lifting implementation by @garth-wells in #1913
• Support creation of 'sub' meshes by @jpdean in #1907
• Dynamically create Form classes to inherit from appropriate typed cpp base by @garth-wells in #1909
• Sort imports by @garth-wells in #1914
• Fix function copy option by @jorgensd in #1916
• Remove unnecessay semicolons by @mscroggs in #1919
• Add demo CMakeList.txt files to repo by @garth-wells in #1918
• Fix Python wrappers when SCOTCH not installed by @jhale in #1917
• Rename dirichletbc.py -> bcs.py by @garth-wells in #1920
• Fix CMake python interp name by @garth-wells in #1921
• Add ufl files as CMake targets and compile when needed by @garth-wells in #1922
• Check that the CoordinateElement is correct when creating a FunctionSpace by @mscroggs in #1923
• Updates for ufc.h -> ufcx.h renaming by @garth-wells in #1924
• Simplify ufcx.h detection by @garth-wells in #1925
• Store allocator type in la::Vector by @IgorBaratta in #1929
• Major simplification of PETSc and SLEPc detection by @garth-wells in #1927
• Remove unused xmls by @jorgensd in #1932
• Remove unused timers by @jorgensd in #1931
• Docker dependency version bumps by @garth-wells in #1935
• Fix regression in eval by @jorgensd in #1937
• Update GitHub EC2 runner by @jhale in #1938
• Bump gmsh version by @jorgensd in #1939
• Update UFL dependency check by @garth-wells in #1940
• Fix narrowing of global indices in graph builder by @chrisrichardson in #1941
• Add uniform weights to MPI neighbor communicator by @IgorBaratta in #1944
• Global range bugfix by @chrisrichardson in #1945
• Make timing MPI reduction easily selectable, and MPI_MAX by default by @chrisrichardson in #1949
• Add optional cells argument in interpolate functions by @garth-wells in #1950
• Add function to get Vector allocator by @IgorBaratta in #1953
• Bump NumPy and xtl in Dockerfile by @garth-wells in #1954
• Refactor Function::eval for performance by @jorgensd in #1948
• Enable CMAKE_INCLUDE_CURRENT_DIR in cpp/demos by @IgorBaratta in #1952
• Disable Sphinx warnings as errors. by @garth-wells in #1957
• Move data allocation out of scatter_**_begin by @IgorBaratta in #1956
• Remove compute point values from demos by @jorgensd in #1955
• Support creation of a FiniteElement from a Basix element and add H(curl) interpolation demo by @garth-wells in #1889
• Fix questionable std::move in mesh construction by @garth-wells in #1961
• Further memory reductions in mesh construction by @garth-wells in #1962
• Add conversions from UFL manifold cell string types by @jhale in #1963
• Add native dolfinx sparse matrix by @chrisrichardson in #1930
• Add matrix-free demo (C++) by @IgorBaratta in #1959
• Bump sonarcloud. Remove broken link in favor of github tags by @jorgensd in #1968
• Fix broken SparsityPattern Python interface by @jorgensd in #1967
• SLEPc cmake fix by @jhale in #1970
• Add FiniteElement::operator== to check elements for equality by @garth-wells in #1951
• Fix eval with empty input coordinates by @jorgensd in #1942
• Simplify ADIOS2 writers by @garth-wells in #1972
• Refactor pack coefficients by @IgorBaratta in #1966
• Spack CI updates by @garth-wells in #1975
• Fix bug in interpolation of sub-functions by @garth-wells in #1977
• Disable some workflows on forks by @garth-wells in #1981
• Switch boost::filesystem to std::filesystem by @garth-wells in #1980
• Fix SonarCloud for remote PRs by @jhale in #1984
• Add support for pathlib by @finsberg in #1978
• Use std::filesystem in pybind11 layer by @garth-wells in #1985
• Remove dolfinx_utils by @garth-wells in #1982
• Update Expression by @michalhabera in #1858
• Add missing ghost update to elasticity demo by @jhale in #1987
• Improve VTK output by @garth-wells in #1990
• Various clean-ups by @jorgensd in #1994
• Import second level submodules automatically by @michalhabera in #1993
• Allow creation of, and operations on, a Mesh where some ranks have no cells. by @garth-wells in #1995
• Extend pyvista plotting to higher order meshes. by @jorgensd in #1996
• myst as source format for demos by @jhale in #1992
• Remove pylit remnants by @garth-wells in #1998
• Fix deprecation warning for python 3.10 by @jorgensd in #2001
• Standards compliant debug definition by @garth-wells in #2000
• Use installed Catch2 test library by @garth-wells in #2002
• Docker bumps by @garth-wells in #2004
• Update compiler flags for mpich 4.0 in Dockerfiles by @garth-wells in #2006
• Correct offset to avoid out-of-bounds array access by @anzil in #2007
• Add Python example with MatrixCSR by @garth-wells in #1999
• Support creation of Vector and MatrixCSR from Python with different scalar types by @garth-wells in #2008
• Simplify and improve Python demo docs by @garth-wells in #2010
• Remove new doc deps from CI by @jhale in #2011
• Change SLEPcEigenSolver.h to slepc.h by @garth-wells in #2013
• Add DPC variants by @mscroggs in #2015
• Serendipity variants by @mscroggs in #2017
• Sandbox PETSc-dependent NewtonSolver class in nls::petsc namespace by @garth-wells in #2018
• Fix facet plotting by @jorgensd in #2020
• Move PETSc assembly functions into submodule by @garth-wells in #2016
• Remove Function.ufl_evaluate by @garth-wells in #2024
• Add bc handling to MatrixCSR assembly from Python by @garth-wells in #2025
• Make UFL files Python by @michalhabera in #2021
• Fix wheel build syntax by @jhale in #2026
• Bump UFL requirement by @jhale in #2028
• Add more logging to XDMF meshtags by @chrisrichardson in #2029
• Fix sub element creation of function space based on basix element by @jorgensd in #2030
• Update gitattributes by @jorgensd in #2032
• Bump MPICH and pyvista version in Dockerfile by @garth-wells in #2034
• Get SLEPc from gitlab in Dockerfile [skip ci] by @garth-wells in #2036
• Run more robust Spack CI demo test by @garth-wells in #2037
• Fix interpolation-io demo [continuous element] by @IgorBaratta in #2038
• Sphinx + Breathe for C++ docs by @garth-wells in #2035
• Doc CI build path updates by @garth-wells in #2041
• Use the metaclass approach for MeshTags of different types. by @garth-wells in #2042
• Remove unused variable result by @jorgensd in #2043
• Minor documentation improvements (C++/Breathe) by @garth-wells in #2045
• Remove UniqueIdGenerator by @garth-wells in #2044
• Fix relative link in C++/Breathe docs by @garth-wells in #2046
• Reduce peak memory use when distributing data in parallel by @garth-wells in #2047
• Add scalable sparse neighbourhood discovery by @garth-wells in #2050
• Simplify MeshTag construction by @garth-wells in #2052
• Fix issue with MeshTags and ufl_id by @garth-wells in #2053
• Fix MPI 'free' bug in unittest by @garth-wells in #2057
• Fix bug in topology creation by @jpdean in #2060
• Topology computation improvements, removes xtensor in topology computation by @garth-wells in #2063
• Replace discrete operator with arbitrary order operator by @jorgensd in #2051
• Remove a debug line by @garth-wells in #2064
• Fix sub component name by @jorgensd in #2068
• Add missing "else" by @mscroggs in #2079
• Avoid using count/id to name fem.Functions in Python by @jorgensd in #2073
• Do not overwrite UFL id in Function by @michalhabera in #2081
• Some fixes for dofmap creation on a submesh by @jpdean in #2062
• Return empty permutations on ranks with no cells or facets by @jpdean in #2071
• Make mesh construction scalable (and remove MPI all-to-all calls) by @garth-wells in #2080
• Add Python interface for ADIOS2-based output formats by @jorgensd in #2056
• Set PETSc options prefix for matrix and vector in fem.petsc.LinearProblem by @jorgensd in #2077
• Fix typing of assemble_vector_nest by @jorgensd in #2082
• Change empty default lists to None by @jorgensd in #2084
• Test higher-order spaces on a submesh by @jpdean in #2085
• Fix for exterior facet integrals on a submesh by @jpdean in #2086
• Remove tdim where it can be got from the cell by @garth-wells in #2088
• Move file __enter__/__exit__ to the Python layer by @garth-wells in #2087
• Discrete interpolation matrix by @jorgensd in #2069
• Fix interpolation into serendipity by @mscroggs in #2078
• Fix return type of kahip partitioner by @IgorBaratta in #2090
• Fix typo - proposed by @srosenbu by @IgorBaratta in #2092
• Make mesh distribution deterministic for a given number of ranks by @garth-wells in #2093
• Improvement in mesh topology computation by @garth-wells in #2083
• Remove common::subsystem by @garth-wells in #2094
• Add MyST option to enable 'dollarmath' by @garth-wells in #2099
• Add adios2 files (.bp) and pngs to gitignore by @jorgensd in #2100
• Remove redundant directory in C++ test path by @garth-wells in #2102
• Skip gemv for identity operators in interpolation_matrix by @IgorBaratta in #2095
• Add access to original cell index by @chrisrichardson in #2101
• Ignore zero entries - interpolation matrix by @IgorBaratta in #2105
• Fix writing HDF5 files to subdirectory and flatten Python tests by @garth-wells in #2103
• Simplify topology build by @garth-wells in #2096
• Fill output matrix with 0.0 in math::pinv by @SarahRo in #2110
• Submesh entity map fix by @jpdean in #2107
• Docker file version bumps by @garth-wells in #2112
• Minor improvements and removal of unused includes by @jorgensd in #2108
• Support refinement of meshes with MeshTags by @chrisrichardson in #2104
• Link to MPI C libraries only via CMake by @garth-wells in #2116
• Simplify local dual graph construction by @garth-wells in #2117
• Improve ghost topology computation by @garth-wells in #2118
• Fix for submeshes with entities of codimension 1 by @jpdean in #2115
• Fix Dockerfile by @tiagovla in #2122
• Fix typos in geometry.h by @IgorBaratta in #2129
• Fix compute_boundary_facets for GhostMode.none by @jpdean in #2124
• Fix expression evaluation on subset of cells by @jorgensd in #2135
• Add support for custom Basix elements by @mscroggs in #2113
• Improve determination of geometry element dimension by @jorgensd in #2128
• Better submesh assembly tests by @jpdean in #2133
• Throw runtime error for blocked mixed Dirichlet BC with Constant by @jorgensd in #2130
• Remove an AllGather from refinement code by @chrisrichardson in #2137
• Add non-recursive collision algorithm by @IgorBaratta in #2125
• Simplify Spack instructions by @garth-wells in #2146
• Simplify Basix element creation by @mscroggs in #2143

New Contributors

• @tkoyama010 made their first contribution in #1771
• @renefritze made their first contribution in #1782
• @matsievskiysv made their first contribution in #1822
• @SarahRo made their first contribution in #1831
• @finsberg made their first contribution in #1978
• @tiagovla made their first contribution in #2122

Full Changelog: 0.1.0...v0.4.0