adding codecov.yml

Author: pbreheny

.Rbuildignore

@@ -5,5 +5,4 @@
 ^\.version\.json$
 ^.*\.Rproj$
 ^\.Rproj\.user$
-^codecov\.yml$
 ^\.vscode$

codecov.yml

@@ -0,0 +1,14 @@
+comment: false
+
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 1%
+        informational: true
+    patch:
+      default:
+        target: auto
+        threshold: 1%
+        informational: true