mitransient v1.3.1

🚀 mitransient 1.3.1 adds support for Mitsuba 3.9.1, new features for hidden geometry sampling, fixes to differentiable transient rendering and comes with a brand new logo!

• Hidden geometry sampling in transient_nlos_path no longer depends on the order of the shapes in the scene, and now has a configurable maximum depth with nlos_hidden_geometry_sampling_max_depth (PRs #13 and #14 @matla91)
• Differentiable transient rendering has been fixed, and gradients are now consistent with finite differences (transient_path, transient_prbvolpath and transient_nlos_path)
• Minor fixes to phasor_hdr_film, the angulararea emitter and confocal/exhaustive NLOS captures so they work with newer Mitsuba/Dr.Jit versions
• New mitransient logo by @opueyociutad, also in [mitransient.readthedocs.io](mitransient.readthedocs.io

Full Changelog: v1.3.0...v1.3.1