v0.0.15

Fixed

• Missing file extension.

Added

• CompatibilityDetector to determine whether the path tracer can run on the target platform.
• DEBUG_MODE define to PhysicalPathTracingMaterial to render out ray depth.
• GradientMapMaterial to map texture values to a color ramp.
• Support for copy function to ShapedAreaLight, PhysicalCamera, and PhysicalSpotLight.

Changed

• Fog hits no longer count as transparent surface bounces.
• Remove precision workaround for Equirect map.
• Significant refactoring to make more effective use of structs.