chore(release): 5.1.0

Author: shellscape

package.json

@@ -1,9 +1,6 @@
 {
   "name": "koa-webpack",
-  "version": "5.1.0-beta.1",
-  "publishConfig": {
-    "tag": "beta"
-  },
+  "version": "5.1.0",
   "description": "Development and Hot Reload Middleware for Koa2",
   "license": "MPL",
   "repository": "shellscape/koa-webpack",
@@ -47,7 +44,7 @@
     "loud-rejection": "^1.6.0",
     "merge-options": "^1.0.0",
     "webpack-dev-middleware": "^3.0.0",
-    "webpack-hot-client": "^4.1.0-beta.1",
+    "webpack-hot-client": "^4.1.0",
     "webpack-log": "^1.1.1"
   },
   "devDependencies": {