v3.3.0

Changes in this version:

• Upgrade Dr.Jit to v0.4.2
• Emitters' members are opaque (fixes long JIT compilation times) df940c1
• Sensors' members are opaque (fixes long JIT compilation times) c864e08
• Fix cylinder's normals d9ea8e8
• Fix next event estimation (NEE) in volume integrators a71b946
• mi.xml.dict_to_xml now supports volumes 15d63df
• Allow extending AdjointIntegrator in Python 15d63df
• mi.load_dict() is parallel (by default) bb672ed
• Upsampling routines now support box filters 64e2ab1
• The Mesh.write_ply() function writes s, t rather than u, v fields fe4e448
• All shapes can hold Texture attributes which can be evaluated f6ec944
• Radiative backpropagation style integrators use less memory c1a9b8f
• New bsplinecurve and linearcurve shapes e4c847f .. 79eb026