add codecov.yml

codecov.yml

@@ -0,0 +1,15 @@
+coverage:
+  status:
+    project: #add everything under here, more options at https://docs.codecov.com/docs/commit-status
+      default:
+        # basic
+        target: auto #default
+        threshold: 0%
+        base: auto
+comment: #this is a top-level key
+  layout: " diff, flags, files"
+  behavior: default
+  require_changes: false  # if true: only post the comment if coverage changes
+  require_base: false        # [true :: must have a base report to post]
+  require_head: true       # [true :: must have a head report to post]
+  hide_project_coverage: false # [true :: only show coverage on the git diff aka patch coverage]]