v2.6.2 for Blender 3.5+

Fixes some issues with initial boolean attributes to do with backbone selection. Additionally fixes some errors with surface generation and node duplication.

What's Changed

• tweak att_is_backbone() to include O by @BradyAJohnston in #208
• Improve atom_name and is_backbone by @BradyAJohnston in #209
• Stop node tree duplications by @BradyAJohnston in #210
• Fix surface split by @BradyAJohnston in #211

Full Changelog: v2.6.1...v2.6.2