0.547

Analysis changes

• Type aliases can no longer override primitive types; attempts to do that will result in a type error
• Fix misleading type error messages for mismatches in expression list length during assignment
• Fix incorrect type name display in certain cases

Runtime changes

• setmetatable/getmetatable are now ~2x faster
• tools/perfstat.py can be used to display statistics about profiles captured via --profile switch

Community contributions

None this week; PRs are always welcome!