Release version 3.1.0 (#52)

* Bump version 3.1.0

Author: matthewelwell

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## [3.1.0]
+
+ - Upgrade dio
+ - Github Workflows improvements
+
 ## [3.0.3]
 
  - Upgrade rxdart dependency

pubspec.yaml

@@ -3,7 +3,7 @@ description: >-
   Flutter Client SDK for https://www.flagsmith.com/, Flagsmith is 100% Open
   Source. Host yourself or let us take care of the hosting.
 
-version: 3.0.3
+version: 3.1.0
 homepage: https://github.com/Flagsmith/flagsmith-flutter-client
 repository: https://github.com/Flagsmith/flagsmith-flutter-client
 issue_tracker: https://github.com/Flagsmith/flagsmith-flutter-client/issues