resistor-color-duo: bump version

ErikSchierboom · ErikSchierboom · commit 43eee2d4481d · 2019-08-16T17:23:31.000+02:00
diff --git a/exercises/resistor-color-duo/canonical-data.json b/exercises/resistor-color-duo/canonical-data.json
@@ -1,6 +1,6 @@
 {
   "exercise": "resistor-color-duo",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "cases": [
     {
       "description": "Brown and black",
