The following changes have been made amongst others:
- Added overlays, which are drawn in the scene regardless of the rendering mode - things like hydrogen bonds, atom labels, etc
- Added ability to automatically add hydrogen atoms to the molecule in their correct position
- Fixed the renderers so they aline double, triple, etc bonds correctly
- Optimised the scene rendering
- Improved the speed of the PDB importer
- Improvements to the extension API
Try it out and let me know what you think! I have another release in the works which will add a bunch of cool new features, coming soon. If you have any requests let me know ill see if i can get it in there.