0.537

Analysis changes

• Disable lower bounds calculation mode by default as we're fixing some underlying problems induced by it
• Disable precise computation of returned types in non-strict mode as it makes non-strict mode too strict
• Fix type checker stability with upcoming lower bounds calculation mode
• Fix type checking false positives with optionals & nested tables (fixes #596)
• Fix type checking false positives in non-strict mode when using generalized iteration

Runtime changes

• Optimize local reassignment (eg local foo = bar :: type) which is now free if neither local is mutated
• Minor cleanup in error messages for table operations

Community contributions

• Documentation of round tie-breaking by @memery-rbx in #602