Update metadata.txt to 0.6.0

Author: jk-wg

profile_manager/metadata.txt

@@ -22,5 +22,20 @@ qgisMaximumVersion=3.99
 server=False
 
 # versioning
-version=0.5.0-beta2
+version=0.6.0
 changelog=
+    Version 0.6.0:
+    - Another huge refactor, many bug fixes
+    Version 0.5:
+    - Support for exporting profiles for QGIS Deployment Toolbelt (QDT)
+    Version 0.4:
+    - Fairly big refactoring and cleanup
+    - Better and more verbose error handling
+    - Improve performance
+    - Reduce backup size, change backup directory
+    - Improve dialogs and messages
+    - Add support for Vector Tiles connections
+    - Fix a crash (thanks Ivano Giuliano!)
+    - ...
+    Version 0.3:
+    - ... Tales of prehistoric times ...