update codecov.yml

codecov.yml

@@ -1 +1,14 @@
-# comment: false
+# configuration related to pull request comments
+comment: false # do not comment PR with the result
+
+coverage:
+  range: 30..80 # coverage lower than 30 is red, higher than 80 green, between color code
+
+  status:
+    project: # settings affecting project coverage
+      default:
+        target: auto # auto % coverage target
+        threshold: 10%  # allow for 10% reduction of coverage without failing
+
+    # do not run coverage on patch nor changes
+    patch: false# comment: false