benchmark/group.yml in red_amber-0.2.3 vs benchmark/group.yml in red_amber-0.3.0

@@ -1,9 +1,15 @@
+loop_count: 3
+
 contexts:
   - name: HEAD
     prelude: |
       $LOAD_PATH.unshift(File.expand_path('lib'))
-  - gems:
+  - name: 0.2.3
+    gems:
+      red_amber: 0.2.3
+  - name: 0.2.2
+    gems:
       red_amber: 0.2.2
 
 prelude: |
   require 'red_amber'
   require 'datasets-arrow'