Stable v4.0.0.

All releases happens one-per-month, with new features at each stable
release, you had complains so that stops, the next release will may not
be available on next month, but it will take longers, this release
should be the most iris stable version you can get now.

HISTORY.md

@@ -3,6 +3,17 @@
 **How to upgrade**: remove your `$GOPATH/src/github.com/kataras/iris` folder, open your command-line and execute this command: `go get -u github.com/kataras/iris/iris`.
 
 
+## 4.0.0-alpha.5 -> 4.0.0
+
+- **Feature request has been implemented**: Add layout support for Pug/Jade, example [here](https://github.com/iris-contrib/examples/tree/master/template_engines/template_pug_2).
+- **Feature request has been implemented**: Forcefully closing a Websocket connection, `WebsocketConnection.Disconnect() error`.
+
+- **FIX**: WebsocketConnection.Leave() will hang websocket server if .Leave was called manually when the websocket connection has been closed.
+- **FIX**: StaticWeb not serving index.html correctly, align the func with the rest of Static funcs also, [example](https://github.com/iris-contrib/examples/tree/master/static_web) added.
+
+Notes: if you compare it with previous releases (13+ versions before v3 stable), the v4 stable release was fast, now we had only 6 versions before stable, that was happened because many of bugs have been already fixed and we hadn't new bug reports and secondly, and most important for me, some third-party features are implemented mostly by third-party packages via other developers!
+
+
 ## 4.0.0-alpha.4 -> 4.0.0-alpha.5
 
 - **NEW FEATURE**: Letsencrypt.org integration[*](https://github.com/kataras/iris/issues/220)