Various extensions to the vectorizer

See merge request pycodegen/pystencils!439

Introduce Nox for Local and CI Test Automation. Start Writing a Contributors Guide.

See merge request pycodegen/pystencils!436

Expose method to retrieve the original name of a duplicated symbol

See merge request pycodegen/pystencils!440

Fix canonicalization of >2 loops with the same counter

See merge request pycodegen/pystencils!435

Don't import from deprecated pystencils.kernelcreation

See merge request pycodegen/pystencils!434

Consolidate codegen and JIT modules.

See merge request pycodegen/pystencils!433

fix memory layout descriptor parsing (v2.0-dev edition)

See merge request pycodegen/pystencils!432

Jupyter Inspection Framework, Book Theme, and Initial Drafts for Codegen Reference Guides

See merge request pycodegen/pystencils!430

Iteration Slices: Extended GPU support + bugfixes

See merge request pycodegen/pystencils!429

Refactor and Improve Documentation

See merge request pycodegen/pystencils!425

Vectorization in Default Kernel Creation Driver

See merge request !428

Fixes to Constant Elimination Pass

See merge request pycodegen/pystencils!427

Refactor DEFAULTS & fix bugs concerning data types of spatial counter symbols

See merge request pycodegen/pystencils!426

Vectorization: Infrastructure and Base Implementation for x86

See merge request pycodegen/pystencils!424

Migrate Test Suite

See merge request pycodegen/pystencils!409

fix usage of kernel parameter API in boundary handling

See merge request pycodegen/pystencils!423

Refactor Field Modelling

See merge request pycodegen/pystencils!421

Revised Array Modelling & Memory Model

See merge request pycodegen/pystencils!420

Clarify semantics of fancy integer division functions.

See merge request pycodegen/pystencils!417

Improve freezing of additions

See merge request pycodegen/pystencils!415