0.529

Analysis changes

• Improved parse error when function is used as a type
• Type checker now reports errors when indexing tables that don't have an indexer

Runtime changes

• Fix a bug with unsandboxed iteration with pairs() (#504)
• Bytecode optimizer can now inline functions and unroll loops with nested loops at -O2
• Bytecode output for --compile flag now uses labels instead of jump offsets

Community contributions

• Add lua_tolightuserdata, optimized lua_topointer by @petrihakkinen in #496
• Make coroutine.status use a string literal by @metatablecat in #500
• Fix VM inconsistency caused by userdata C TM fast paths by @axstin in #497