use set().union instead of reduce. remove non-required imports in test_sycl. Add test for include sorting.

 - fix source file listing on cli
 - properly sort function and method args again

implement user-defined include sorting. Improve header collection for pystencils-native types. Fix more tests.

 - move numpy_struct to class composer and use its sequencers
 - fix some type errors

CMake Interaction Update

Closes #8 and #6

See merge request !16

Use config descriptor system from pystencils

See merge request !15

Adapt SFG to field typing changes in pystencils

See merge request !14

Allowing also .hip as generated file extension

See merge request !13

Improve versatility and robustness of `cpptype`, and document it in the user guide

See merge request !12

Introduce Nox for Test Automation

See merge request !10

Adapt to pystencils codegen API changes

See merge request !11

the pystencils include directory is now added to the include paths

See merge request !9

Add CONFIG_MODULE parameter to CMake function. Add Tests for CMake Integration.

See merge request !8

Headerfile.parse removes strips " from strings

See merge request !7

Extend mdspan interface and fix mdspan memory layout mapping

See merge request !5