codecov tweaks

Author: ablaom

.github/codecov.yml

@@ -0,0 +1,9 @@
+coverage:
+  status:
+    project:
+      default:
+        threshold: 0.5%
+        removed_code_behavior: fully_covered_patch
+    patch:
+      default:
+        target: 80%

.github/workflows/ci.yml

@@ -70,6 +70,8 @@ jobs:
         with:
           file: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: false
+
   docs:
     name: Documentation
     runs-on: ubuntu-latest