docs: add support for PR labels (#404)

lerna.json

@@ -1,5 +1,18 @@
 {
+  "version": "1.4.1",
   "npmClient": "yarn",
   "useWorkspaces": true,
-  "version": "1.4.1"
+  "changelog": {
+    "repo": "cliqz-oss/adblocker",
+    "cacheDir": ".changelog",
+    "labels": {
+      "PR: Breaking Change :boom:": ":boom: Breaking Change",
+      "PR: New Feature :rocket:": ":rocket: New Feature",
+      "PR: Bug Fix :bug:": ":bug: Bug Fix",
+      "PR: Polish :nail_care:": ":nail_care: Polish",
+      "PR: Docs :memo:": ":memo: Documentation",
+      "PR: Internal :house:": ":house: Internal",
+      "PR: Performance :running_woman:": ":running_woman: Performance"
+    }
+  }
 }