Add changelog and bump version

Signed-off-by: Joas Schilling <coding@schilljs.com>

CHANGELOG.md

@@ -1,6 +1,34 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## 5.0.3 – 2019-04-11
+### Changed
+- Remove some conversation informations for non-participants
+  [#1518](https://github.com/nextcloud/spreed/pull/1518)
+
+### Fixed
+- Fix duplicated call summary message when multiple people leave at the same time
+  [#1599](https://github.com/nextcloud/spreed/pull/1599)
+- Allow multiline text insertion in chrome-based browsers
+  [#1579](https://github.com/nextcloud/spreed/pull/1579)
+- Fix multiple race-conditions that could interrupt connections, end calls or prevent connections between single participants
+  [#1523](https://github.com/nextcloud/spreed/pull/1523)
+  [#1542](https://github.com/nextcloud/spreed/pull/1542)
+  [#1543](https://github.com/nextcloud/spreed/pull/1543)
+- Enable "Plan B" for chrome/chromium for better MCU support
+  [#1613](https://github.com/nextcloud/spreed/pull/1613)
+- Delay signaling messages when the socket is not yet opened
+  [#1551](https://github.com/nextcloud/spreed/pull/1551)
+- Correctly readd the default STUN server on empty values
+  [#1501](https://github.com/nextcloud/spreed/pull/1501)
+
+## 4.0.4 – 2019-04-11
+### Fixed
+- Enable "Plan B" for chrome/chromium for better MCU support
+  [#1614](https://github.com/nextcloud/spreed/pull/1614)
+- Delay signaling messages when the socket is not yet opened
+  [#1552](https://github.com/nextcloud/spreed/pull/1552)
+
 ## 5.0.2 – 2019-01-30
 ### Changed
 - Show autocompletion as soon as "@" is typed 

appinfo/info.xml

@@ -17,7 +17,7 @@ And in the works for the [coming versions](https://github.com/nextcloud/spreed/m
 
 	]]></description>
 
-	<version>5.0.2</version>
+	<version>5.0.3</version>
 	<licence>agpl</licence>
 
 	<author>Daniel Calviño Sánchez</author>