Changes in this version:
- New projective sampling based integrators, see PR 997 for more details.
Here's a brief overview of some of the major or breaking changes:
- New ``prb_projective`` and ``direct_projective`` integrators
- New curve/shadow optimization tutorial
- Removed reparameterizations
- Can no longer differentiate ``instance``, ``sdfgrid`` and ``Sensor``'s positions