Bump version to 4.0.0

Signed-off-by: Julius Härtl <jus@bitgrid.net>

CHANGELOG.md

@@ -1,4 +1,8 @@
 # Changelog
+## 4.0.0
+
+* [#1317](https://github.com/nextcloud/richdocuments/pull/1317) Nextcloud 21 compatibility @juliushaertl
+* [#1353](https://github.com/nextcloud/richdocuments/pull/1353) Apply new file name after rename @eszkadev
 
 ## 3.7.14
 

appinfo/info.xml

@@ -6,7 +6,7 @@
 	<description><![CDATA[This application can connect to a Collabora Online (or other) server (WOPI-like Client). Nextcloud is the WOPI Host. Please read the documentation to learn more about that.
 
 You can also edit your documents off-line with the Collabora Office app from the **[Android](https://play.google.com/store/apps/details?id=com.collabora.libreoffice)** and **[iOS](https://apps.apple.com/us/app/collabora-office/id1440482071)** store.]]></description>
-	<version>4.0.0-beta1</version>
+	<version>4.0.0</version>
 	<licence>agpl</licence>
 	<author>Collabora Productivity based on work of Frank Karlitschek, Victor Dubiniuk</author>
 	<types>