Libceed

Interface changes

- Added `CeedOperatorSetName` for more readable `CeedOperatorView` output.
- Added `CeedBasisCreateProjection` to facilitate interpolation between nodes for separate `CeedBases`.
- Rename and move `CeedCompositeOperatorGetNumSub` and `CeedCompositeOperatorGetSubList` to public interface.

New features

- Update `/cpu/self/memcheck/*` backends to help verify `CeedQFunctionContext` data sizes provided by user.
- Improved support for $H(\text{div})$ bases.
- Added `CeedInt_FMT` to support potential future use of larger interger sizes.
- Added `CEED_QFUNCTION_ATTR` for setting compiler attributes/pragmas to `CEED_QFUNCTION_HELPER` and `CEED_QFUNCTION`.
- OCCA backend updated to latest OCCA release; DPC++ and OMP OCCA modes enabled.
Due to a limitation of the OCCA parser, typedefs are required to use pointers to arrays in QFunctions with the OCCA backend.
This issue will be fixed in a future OCCA release.

Bugfix

- Fix bug in setting device id for GPU backends.
- Fix storing of indices for `CeedElemRestriction` on the host with GPU backends.
- Fix `CeedElemRestriction` sizing for `CeedOperatorAssemblePointBlockDiagonal`.
- Fix bugs in CPU implementation of `CeedOperatorLinearAssemble` when there are different number of active input modes and active output modes.

Examples

Compressible Navier-Stokes mini-app

- Various performance enhancements, analytic matrix-free and assembled Jacobian, and PETSc solver configurations for GPUs.
- Refactored to improve code reuse and modularity.
- Support for primitive variables for more accurate boundary layers and all-speed flow.
- Added $YZ\beta$ shock capturing scheme and Shock Tube example.
- Added Channel example, with comparison to analytic solutions.
- Added Flat Plate with boundary layer mesh and compressible Blasius inflow condition based on Chebyshev collocation solution of the Blasius equations.
- Added strong and weak synthetic turbulence generation (STG) inflow boundary conditions.
- Added "freestream" boundary conditions based on HLLC Riemann solver.
- Automated stabilization coefficients for different basis degree.

PETSc Bake-off problems

- Support for convergence studies.

Maintainability

- Refactored `/gpu/cuda/shared` and `/gpu/cuda/gen` as well as `/gpu/hip/shared` and `/gpu/hip/gen` backend to improve maintainablity and reduce duplicated code.
- Enabled support for `p > 8` for `/gpu/*/shared` backends.
- Switch to `clang-format` over `astyle` for automatic formatting; Makefile command changed to `make format` from `make style`.
- Improved test harness.

Bugfix for GPU support - install JiT source files in install directory

Single precision support, capability to assemble operators on GPUs, performance enhancements, various interface and error checking improvements, and mini-app improvements.

Portability improvements, GPU support for helper utility functions in QFunctions, bug fixes, Rust packaging, and mini-app improvements.

Support for matrix assembly (mainly intended for low order and coarse grids), new HIP and MAGMA backends with kernel fusion, Julia and Rust interfaces, static linking, better error recovery, and improvements to fluids and solids examples.

New HIP backend, revamped OCCA backend, restriction by offsets instead of blocked indices, improved solver ingredients, and numerous bug fixes and improvements to examples.