Enable bulldozer (#46)

.bulldozer.yml

@@ -1,3 +1,14 @@
-mode: whitelist
-strategy: squash
-deleteAfterMerge: true
+version: 1
+merge:
+  whitelist:
+    labels: ["merge when ready"]
+  blacklist:
+    labels: ["do not merge"]
+  method: squash
+  options:
+    squash:
+      body: pull_request_body
+  delete_after_merge: true
+update:
+  whitelist:
+    labels: ["update me"]

.excavator.yml

@@ -0,0 +1,6 @@
+auto-label:
+  names:
+    versions-props/upgrade-all: [ "merge when ready" ]
+    excavator/manage-circleci: [ "merge when ready" ]
+  tags:
+    roomba: [ "merge when ready" ]