v3.2.0

Changes in this version:

• Upgrade Dr.Jit to v0.4.0
  • Various bug fixes
  • Stability improvements (race conditions, invalid code generation)
  • Removed 4 billion variable limit
• Add missing Python bindings for Shape and ShapePtr bdce950
• Fix Python bindings for Scene 4cd5585
• Fix bug which would break the AD graph in spectral variants f3ac81b
• Parallel scene loading in JIT variants 48c14a7 .. 187da96
• Fix sampling of hg PhaseFunction 10d3514
• Fix envmap updating in JIT variants 7bf132f
• Expose PhaseFunction of Medium objects through mi.traverse() cca5791