0.548

Analysis changes

• Fix rare type checking bugs with invalid generic types escaping the module scope
• Fix type checking of variadic type packs in certain cases
• Implement type normalization, which resolves a large set of various issues with unions/intersections in type checker
• Improve parse errors for trailing commas in function calls and type lists

Runtime changes

• Improve performance of lua_getinfo (debug.info, debug.traceback and profiling overhead are now 20% faster/smaller)
• Improve performance of polymorphic comparisons (1-2% lift on some benchmarks)
• Improve performance of closure creation (1-2% lift on some benchmarks)
• Improve string comparison performance (4% lift on string sorting)
• Reduce profiling skew when using --profile with very high frequencies

Community contributions

None this week; PRs are always welcome!