Release new version!

Author: Sobak

app/Codice.php

@@ -5,7 +5,7 @@
 use Codice\Plugins\Filter;
 
 class Codice {
-    private $version = '0.4.0-dev';
+    private $version = '0.4.0';
 
     public function getVersion()
     {

readme.md

@@ -1,8 +1,8 @@
 # Codice
 
 [![Build Status](https://travis-ci.com/Sobak/Codice.svg?token=56jJWzdqW9ZYp8m68yDz&branch=master)](https://travis-ci.com/Sobak/Codice)
-[![Version](https://img.shields.io/badge/version-v0.3.0-blue.svg)](https://github.com/Sobak/Codice/releases)
-![Developed Version](https://img.shields.io/badge/developed-v0.4.0--dev-orange.svg)
+[![Version](https://img.shields.io/badge/version-v0.4.0-blue.svg)](https://github.com/Sobak/Codice/releases)
+![Developed Version](https://img.shields.io/badge/developed-v0.5.0--dev-orange.svg)
 
 > **Codice** is online note-taking and task-management application.