Mitsuba

Changes in this version:

- Fixed maximum limits for OptiX kernel launches [a8e698](https://github.com/mitsuba-renderer/mitsuba3/commit/a8e69898eacde51954bbc91b34924448b4f8c954)

New features

- Enable ray tracing against two different scenes in a single kernel [df79cb](https://github.com/mitsuba-renderer/mitsuba3/commit/df79cb3e2837e9296bc3e4ff2afb57416af102f4)
- Make ``ShapeGroup`` traversable and updatable [e0871a](https://github.com/mitsuba-renderer/mitsuba3/commit/e0871aa8ab58b64216247ed189a77e5e009297d2)
- Enable differentiation of ``to_world`` in ``instance`` [54d2d3](https://github.com/mitsuba-renderer/mitsuba3/commit/54d2d3ab785f8fee4ade8581649ed82d653847cb)
- Enable differentiation of ``to_world`` in ``sphere``, ``rectangle``, ``disk`` and ``cylinder`` [f5dbed](https://github.com/mitsuba-renderer/mitsuba3/commit/f5dbedec9bab3c45d31255532da07b0c01f5374c ) .. [b5d8c](https://github.com/mitsuba-renderer/mitsuba3/commit/b5d8c5dc8f33b65613ca27819771950ab9909824)
- Enable differentiation of ``to_world`` in ``perspective`` and ``thinlens`` [ef9f55](https://github.com/mitsuba-renderer/mitsuba3/commit/ef9f559e0989fd01b43acce90892ba9e0dea255b ) .. [ea513f](https://github.com/mitsuba-renderer/mitsuba3/commit/ea513f73b65b8776afb75fdc8d40db4b1140345e)
- Add ``BSDF::eval_diffuse_reflectance()`` to most BSDF plugins [59af88](https://github.com/mitsuba-renderer/mitsuba3/commit/59af884e6fae3a50074921136329d80462b32413)
- Add ``mi.OptixDenoiser`` class for simple denoising in Python [13234](https://github.com/mitsuba-renderer/mitsuba3/commit/1323497f4e675a8004529eef8404cdc541ade7cf ) .. [55293](https://github.com/mitsuba-renderer/mitsuba3/commit/552931890df648a5416b0d54d15488f6e766797a)
- ``envmap`` plugin can be constructed from ``mi.Bitmap`` object [9389c8](https://github.com/mitsuba-renderer/mitsuba3/commit/9389c8d1d16aa7a46d0a54f64eec1d10a1ae1ffd)

Other improvements

- Major performance improvements in ``cuda_*`` variants with new version of Dr.Jit
- Deprecated ``samples_per_pass`` parameter [8ba85](https://github.com/mitsuba-renderer/mitsuba3/commit/8ba8528abbad6add1f6a97b30b79ce53c4ff37bf)
- Fix rendering progress bar on Windows [d8db80](https://github.com/mitsuba-renderer/mitsuba3/commit/d8db806ae286358b31ade67dc714de666b25443f)
- ``obj`` file parsing performance improvements on Windows [28660f](https://github.com/mitsuba-renderer/mitsuba3/commit/28660f3ab9db8f1da58cc38d2fd309cff4871e7e)
- Fix ``mi.luminance()`` for monochromatic modes [61b95](https://github.com/mitsuba-renderer/mitsuba3/commit/61b9516a742f29e3a5d20e41c50be90d04509539)
- Add bindings for ``PluginManager.create_object()`` [4ebf70](https://github.com/mitsuba-renderer/mitsuba3/commit/4ebf700c61e92bb494d605527961882da47a71c0)
- Fix ``SceneParameters.update()`` unnecessary hash computation [f57e74](https://github.com/mitsuba-renderer/mitsuba3/commit/f57e7416ac263445e1b74eeaf661361f4ba94855)
- Fix numerical instabilities with ``box`` filter splatting [2d8976](https://github.com/mitsuba-renderer/mitsuba3/commit/2d8976266588e9b782f63f689c68648424b4898d)
- Improve ``math::bisect`` algorithm [7ca09a](https://github.com/mitsuba-renderer/mitsuba3/commit/7ca09a3ad95cec306c538493fa8450a096560891)
- Fix syntax highlighting in documentation and tutorials [5aa271](https://github.com/mitsuba-renderer/mitsuba3/commit/5aa271684424eca5a46f93946536bc7d0c1bc099)
- Fix ``Optimizer.set_learning_rate`` for ``int`` values [53143d](https://github.com/mitsuba-renderer/mitsuba3/commit/53143db05739b964b7a489f58dbd1bd4da87533c)
- Various minor improvements to the Python typing stub generation [b7ef349](https://github.com/mitsuba-renderer/mitsuba3/commit/f883834a50e3dab694b4fe4ceafdfa1ae3712782 ) .. [ad72a53](https://github.com/mitsuba-renderer/mitsuba3/commit/ad72a5361889bcef1f19b702a28956c1549d26e3)
- Minor improvements to the documentation
- Various other minor fixes

Changes in this patch:
- Change behavior of `<spectrum ..>` and `<rgb ..>` tag at scene loading for better consistency between `*_rgb` and `*_spectral` variants [[f883834]](https://github.com/mitsuba-renderer/mitsuba3/commit/f883834a50e3dab694b4fe4ceafdfa1ae3712782)
- Polarization fixes [[2709889]](https://github.com/mitsuba-renderer/mitsuba3/commit/2709889b9b6970018d58cb0a974f99a885b31dbe), [[06c2960]](https://github.com/mitsuba-renderer/mitsuba3/commit/06c2960b170a655cda831c57b674ec26da7a008f)
- Add PyTorch/Mitsuba interoperability tutorial using `dr.wrap_ad()`
- Fix DLL loading crash when working with Mitsuba and PyTorch in Python [[59d7b35]](https://github.com/mitsuba-renderer/mitsuba3/commit/59d7b35c0a7968957e8469f43c308683b63df5c4)
- Fix crash when evaluating Mitsuba ray tracing kernel from another thread in cuda mode. [[cd0846f]](https://github.com/mitsuba-renderer/mitsuba3/commit/cd0846ffc570b13ece9fb6c1d3a05411d1ce4eef)
- Add stubs for `Float`, `ScalarFloat` and other builtin types [[8249179]](https://github.com/mitsuba-renderer/mitsuba3/commit/824917976176cb0a5b2a2b1cf1247e36e6b866ce)
- Plugins regular and blackbody have renamed parameters: `wavelength_min`, `wavelength_max` (previously `lambda_min`, `lambda_max`) [[9d3487c]](https://github.com/mitsuba-renderer/mitsuba3/commit/9d3487c4846c5e9cc2a247afd30c4bbf3cbaae46)
- Dr.Jit Python stubs are generated during local builds [[4302caa8]](https://github.com/mitsuba-renderer/mitsuba3/commit/4302caa8bfd200a0edd6455ba64f92eab2be5824)
- Minor improvements to the documentation
- Various other minor fixes

Changes in this patch:
- Various minor fixes in documentation
- Added experimental batch sensor plugin [[0986152]](https://github.com/mitsuba-renderer/mitsuba3/commit/09861525e6c2ab677172dffc6204768c3d424c3e)
- Fix LD sampler for JIT modes [[98a8ecb]](https://github.com/mitsuba-renderer/mitsuba3/commit/98a8ecb2390ebf35ef5f54f28cccaf9ab267ea48)
- Prevent rebuilding of kernels for each sensor in an optimization [[152352f]](https://github.com/mitsuba-renderer/mitsuba3/commit/152352f87b5baea985511b2a80d9f91c3c945a90)
- Fix direction convention in tabphase plugin [[49e40ba]](https://github.com/mitsuba-renderer/mitsuba3/commit/49e40bad03da536136d3c8563eca6582fcb0e895)
- Create TLS module lookup cache for new threads [[6f62749]](https://github.com/mitsuba-renderer/mitsuba3/commit/6f62749d97904471315d2143b96af5ad6548da06)

This is the first public release of Mitsuba 3.