Add version 0.4.0

CHANGELOG

@@ -7,3 +7,6 @@
 [0.3.0]
 - improved apache configuration
 
+[0.4.0]
+- set targetBoxVersion
+

CloudronManifest.json

@@ -4,7 +4,7 @@
   "author": "WordPress developers",
   "description": "file://DESCRIPTION.md",
   "tagline": "Transform your site into almost anything you can imagine",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "healthCheckPath": "/",
   "httpPort": 8000,
   "manifestVersion": 1,