BradyAJohnston/MolecularNodes: v2.8.0 for Blender 3.5+

A big new version with lots of fixes and some new features thanks to new contributors. Major user-facing changes are the improved handling of biological assemblies, and majorly improved cartoon mesh generation. What's Changed fix: tweak install & test running by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/261 feat: Cache PDB downloads by @PlethoraChutney in https://github.com/BradyAJohnston/MolecularNodes/pull/260 fix: magnesium color bug by @PlethoraChutney in https://github.com/BradyAJohnston/MolecularNodes/pull/264 fix: Cherry-picked changes made to assembly.py by @jahooker in https://github.com/BradyAJohnston/MolecularNodes/pull/253 fix: shading issues with cartoon geometry by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/268 fix: AH alignment issues on borders by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/272 fix: fixes int * float casting error by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/270 fix: Update md.py by @tubiana in https://github.com/BradyAJohnston/MolecularNodes/pull/276 feat: Bring Improved Assembly Reading by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/277 fix: Improves the 'add_attribute()` function by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/279 feat: Overhaul Biological Assemblies by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/278 feat: Reading bioloqgical assemblies from structure files by @padix-key in https://github.com/BradyAJohnston/MolecularNodes/pull/148 feat: entity_id attribute by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/280 fix: Building of docs from branches @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/281 fix: add multiple bpy versions to test suite by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/282 fix: entity_id assignment by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/284 feat: improve cartoon styles by @BradyAJohnston in https://github.com/BradyAJohnston/MolecularNodes/pull/285 New Contributors @PlethoraChutney made their first contribution in https://github.com/BradyAJohnston/MolecularNodes/pull/260 @jahooker made their first contribution in https://github.com/BradyAJohnston/MolecularNodes/pull/253 @padix-key made their first contribution in https://github.com/BradyAJohnston/MolecularNodes/pull/148 Full Changelog: https://github.com/BradyAJohnston/MolecularNodes/compare/v2.7.4...v2.8.