• Addition of an MLNCustomStyleLayer that allows running custom Metal shaders and code. Example included in the PR. (#2041)
• Various performance optimizations.
  • Avoid redundant bindings/states based on Metal profiler feedback. (#2006)
  • Eliminate the remaining examples of tweakers being re-created on each update, which reduced reuse of uniform buffers. (#2050)
  • Eliminate an extra vector allocation for many attributes (#2049)
  • Don't save an extra copy of properties-as-uniforms set with symbol data, or re-build it when updating properties on existing drawables. (#2054)
  • Combine multiple segments into a drawable when sortFeaturesByKey is not used (#2060)
  • UBO by index instead of map (#1980)
  • Use enableDepth option (#2073)
  • Minor optimizations (#2091)