add `racket/vector` to `br`

beautiful-racket-lib/br/main.rkt

@@ -1,10 +1,10 @@
 #lang racket/base
 (require racket/provide racket/list racket/string racket/format racket/match racket/port
-         br/define br/syntax br/datum br/debug br/cond racket/class
+         br/define br/syntax br/datum br/debug br/cond racket/class racket/vector
          (for-syntax racket/base racket/syntax br/syntax br/debug br/define))
 (provide (all-from-out racket/base)
          (all-from-out racket/list racket/string racket/format racket/match racket/port
-                       br/syntax br/datum br/debug br/cond racket/class br/define)
+                       br/syntax br/datum br/debug br/cond racket/class racket/vector br/define)
          (for-syntax (all-from-out racket/base racket/syntax br/syntax br/debug))
          (for-syntax caller-stx with-shared-id)) ; from br/define