Remove dependency on unstable/options.

2d-test/info.rkt

@@ -4,7 +4,7 @@
 (define version "1.0")
 (define deps '("base" "2d-lib"))
 (define build-deps '("rackunit-lib"
-                     "unstable-options-lib"
+                     "options-contract-lib"
                      "at-exp-lib"
                      "gui-lib"
                      "syntax-color-lib"))

2d-test/tests/lexer-test.rkt

@@ -3,7 +3,7 @@
          syntax-color/racket-lexer
          syntax-color/scribble-lexer
          syntax-color/lexer-contract
-         unstable/options
+         racket/contract/option
          2d/private/lexer
          racket/port)