Racket 9.2 strictens match form, updates Typed Racket and Unicode

Racket 9.2 introduces stricter checks for non-linear patterns in the match form, with new requirements that may cause some code to fail if patterns are inconsistent.

Typed Racket now correctly types the asin and acos procedures for cases involving complex numbers, ensuring soundness and potentially causing compile-time errors in affected code.

Character and string operations are now based on Unicode 17.0.