* Optimized operations like instantiation and module export for very
large types
In our new typechecker:
* Typechecking of function calls was rewritten to handle more cases
correctly
* Fixed a crash that can happen after self-referential type is exported
from a module
* Fixed a false positive error in string comparison
* Added handling of `for...in` variable type annotations and fixed
issues with the iterator call inside
* Self-referential 'hasProp' and 'setProp' constraints are now handled
correctly
In our native code generation (jit):
* Added '--target' argument to luau-compile to test multiple
architectures different from host architecture
* GC barrier tag check is skipped if type is already known to be
GC-collectable
* Added GET_TYPE/GET_TYPEOF instructions for type/typeof fast-calls
* Improved code size of interrupt handlers on X64
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