chore(release): 4.3.0 [skip ci]

# [4.3.0](v4.2.1...v4.3.0) (2020-04-20)

### Features

* controls whether to automatically notify Watcher ([2ce07c2](2ce07c2))

package.json

@@ -1,6 +1,6 @@
 {
   "name": "casbin",
-  "version": "4.2.1",
+  "version": "4.3.0",
   "description": "An authorization library that supports access control models like ACL, RBAC, ABAC in Node.JS",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",