Release v0.8.6

This release incorporates our latest round of improvements and bugfixes.

• Improved the surface tracker performance and interface. We recommend re-running offline surface tracker on your previous recordings!
• Optimised the player UI by adding categories to the growing list of plugins.
• Turn on 3d detection and mapping by default.
• Auto rewind the player.
• Added a topic field to all data dictionaries
• Minor fixes.

We hope you find these new features useful and look forward to feedback!

Best, The Pupil Dev Team