v14.2.6

• Main:
  • MaterialSerializer - write vertexcolour regardless of lighting setting
  • ResourceGroupManager - fix condition for changeGroupOwnership
  • ScriptTranslator - do not assert on empty material names
  • VertexData::reorganiseBuffers - assert srcelem exists
• SWIG:
  • enable Matrix4 / Affine3 multiplication
  • fix a bunch of warnings
• Python: Numpy.view - handle Affine3
• GLSLang: fixing linking on archlinux (#3115)
• Assimp: disambiguate embedded textures
• GLSupport: OSX - verify that contentScalingFactor is active
• Vulkan: correctly report the programs it supports
• Samples:
  • Compositor - fix RT debug view with RTSS
  • LightShafts - use PF_DEPTH16
• Tools
  • use explicit anchor for empty material names
  • XMLConverter - print the reason if parsing fails
• Docs: improve gpu_*_rule formatting