Configured CodeClimate

I've overridden the default configuration in such a way that the code as
it is now passes all the code smells checks. Especially the default code
complexity threshold is extremely low.

Author: sybrenstuvel

.codeclimate.yml

@@ -15,3 +15,13 @@ ratings:
   - "**.py"
 exclude_paths:
 - tests/**/*
+checks:
+  argument-count:
+    config:
+      threshold: 5
+  file-lines:
+    config:
+      threshold: 1000
+  method-complexity:
+    config:
+      threshold: 17