Remove use of Enum and Bounded

gwils · gwils · commit 1ddc928c8bb2 · 2018-01-30T15:42:18.000+10:00
diff --git a/src/Course/Cheque.hs b/src/Course/Cheque.hs
@@ -187,7 +187,7 @@ data Digit =
   | Seven
   | Eight
   | Nine
-  deriving (Eq, Enum, Bounded)
+  deriving (Eq, Ord)
 
 showDigit ::
   Digit
