Hamming: Bump test suite to 2.2.0

This references exercism/problem-specifications#1412.

Author: sshine

exercises/hamming/package.yaml

@@ -1,5 +1,5 @@
 name: hamming
-version: 2.1.1.8
+version: 2.2.0.9
 
 dependencies:
   - base

exercises/hamming/test/Tests.hs

@@ -31,62 +31,22 @@ cases = [ Case { description = "empty strands"
                , strand2     = ""
                , expected    = Just 0
                }
-        , Case { description = "identical strands"
+        , Case { description = "single letter identical strands"
                , strand1     = "A"
                , strand2     = "A"
                , expected    = Just 0
                }
-        , Case { description = "long identical strands"
-               , strand1     = "GGACTGA"
-               , strand2     = "GGACTGA"
-               , expected    = Just 0
-               }
-        , Case { description = "complete distance in single nucleotide strands"
-               , strand1     = "A"
-               , strand2     = "G"
-               , expected    = Just 1
-               }
-        , Case { description = "complete distance in small strands"
-               , strand1     = "AG"
-               , strand2     = "CT"
-               , expected    = Just 2
-               }
-        , Case { description = "small distance in small strands"
-               , strand1     = "AT"
-               , strand2     = "CT"
-               , expected    = Just 1
-               }
-        , Case { description = "small distance"
-               , strand1     = "GGACG"
-               , strand2     = "GGTCG"
+        , Case { description = "single letter different strands"
+               , strand1     = "G"
+               , strand2     = "T"
                , expected    = Just 1
                }
-        , Case { description = "small distance in long strands"
-               , strand1     = "ACCAGGG"
-               , strand2     = "ACTATGG"
-               , expected    = Just 2
-               }
-        , Case { description = "non-unique character in first strand"
-               , strand1     = "AAG"
-               , strand2     = "AAA"
-               , expected    = Just 1
-               }
-        , Case { description = "non-unique character in second strand"
-               , strand1     = "AAA"
-               , strand2     = "AAG"
-               , expected    = Just 1
-               }
-        , Case { description = "same nucleotides in different positions"
-               , strand1     = "TAG"
-               , strand2     = "GAT"
-               , expected    = Just 2
-               }
-        , Case { description = "large distance"
-               , strand1     = "GATACA"
-               , strand2     = "GCATAA"
-               , expected    = Just 4
+        , Case { description = "long identical strands"
+               , strand1     = "GGACTGAAATCTG"
+               , strand2     = "GGACTGAAATCTG"
+               , expected    = Just 0
                }
-        , Case { description = "large distance in off-by-one strand"
+        , Case { description = "long different strands"
                , strand1     = "GGACGGATTCTG"
                , strand2     = "AGGACGGATTCT"
                , expected    = Just 9