v13.3.3

What's Changed

• Main
  • add plugin path separator on OSX too
  • Animation - correctly compute time index when time == end
  • apply cosmetic changes suggested by PVS-Studio
  • fix bugs detected by PVS-Studio
  • move shadow material initialisation to ShadowRenderer
  • SkyBox - construct box using a triangle strip
  • TextureUnitState - assert that sampler is valid
  • Root - allow calling openFileStream without a Root instance
  • InstanceBatchHW_VTF - assert that maxUsableWidth is correct
• CMake
  • Dependencies: fix assimp in debug builds
  • Dependencies - use CONFIG mode for Qt according to CMP0086
  • set CMP0086 to NEW, as we dont rely on that
  • fix exported OGRE_PLUGIN_DIR
• RTSS
  • normal_map - verify that referenced sampler exists & update docs
  • Delete default program processors
• GL: allow geometry shaders via GL3.2 instead of EXT_geometry_shader4
• Csharp: check for compiler presence on Linux
• Docs
  • fix typos and merge text
  • LiSPSM - properly reference the papers
• Samples
  • fix samples not loading on OSX
  • OpenCV - fix background being drawn on top