• engine: Fix memory leaks in OpenGL driver.
• engine: new experimental tone mapper, EVILS (name will most likely change).
• engine: Improvements to Vulkan backend.
• engine: Fix incorrect units documented for LightManager.getIntensity.
• engine: fix high quality upsampling for SSAO.
• engine: implement accurate normal reconstruction for SSAO.
• engine: improve LOW and HIGH quality levels for SSAO.
• libs: improvements to libiblprefilter.
• materials: New quality property.
• samples: Add new gltf-viewer iOS sample.
• samples: clear the background in lightbulb sample.