Create .mergify.yml

.mergify.yml

@@ -0,0 +1,14 @@
+pull_request_rules:
+  - name: automatic merge on CI success and review
+    conditions:
+    - "status-success=Windows Build / Build (pull_request)"
+    - "status-success=macOS Build / Build (pull_request)"
+    - "status-success=Linux Build / Build (pull_request)"
+    - "status-success=continuous-integration/appveyor/pr"
+    - "#approved-reviews-by>=1"
+    - "#changes-requested-reviews-by=0"
+    - base=master
+    actions:
+      merge:
+        method: merge
+        strict: true