Rebound

* No longer clipping particles and orbits in visualization.
* Added a scale to visualization. Hide by pressing `t`.
* Option to take a screenshow manually in png (WebGL) or tga (OpenGL) format by pressing `e`.
* Improved `plane` visualization mode. Now supporting hyperbolic orbits.
* Fixed a memory leak in `reb_simulation_copy`.

* Added new `plane` visualization mode for orbits. Press `w` to toggle through available orbit visualization modes.
* Added python interface for screenshot API.
* Fixed an issue where no python exception was raised when a particle was added outside a simulation box.
* Renamed `past_N` to breadcrumbs in visualization module.

* Take screenshots of WebGL based visualizations using the `reb_simulation_output_screenshot()` function. You need to connect one web browser to the simulation in order to take screenshots.
* Improved synchronization of visualization and simulation on Windows with mutex.
* Fixes an issue that might lead to NaN values when less than the maximum number of planets are used in WHFast512.

* It is now possible to programmatically change all aspects of a REBOUND visualization. This can be used to set up default viewing options or to render animations. See the C examples in `animation_solar_system` and `animation_saturn_rings`.
* Reworked matrix operations in visualization routines to follow the Model-View-Projection paradigm.
* Fixed an issues where unit tests would fail because a binary file was not deleted.

* Fixed python wheels for windows.

* New visualization feature that allows you to show past particle positions and orbits (keyboard commands p, u, and i).
* After pausing a simulation, you can now advance it by a single timestep by pressing the down arrow or 50 timesteps by pressing the page down key.
* Visualization now supports scroll to zoom.
* Fixed memory leaks when using custom ODEs.
* Fixed broken links in documentations.