Tommy McHugh

Compile time check implementation

1

Updated implementation from #114. Resolves racket/racket#2996 Adds: check-compile-time-exn check-not-compile-time-exn Comments and thoughts welcome!

fixes struct contract violation message

15

Resolves https://github.com/racket/racket/issues/2998 Example: ``` #lang racket (define-struct/contract s ([x integer?][y boolean?])) (s 1 2) ``` Old Output: ``` $ racket ~/tmp.rkt make-s: contract violation expected: boolean? given: 2 in: the...