add changelog, update version

Author: ueman

feedback/CHANGELOG.md

@@ -1,3 +1,7 @@
+## [3.1.0]
+
+- Fix dialog pop issue [#293](https://github.com/ueman/feedback/pull/293). This may break custom feedback builder. Make sure to test those before updating.
+
 ## [3.0.1]
 
 * Theme is now able to configure more UI elements

feedback/pubspec.yaml

@@ -1,6 +1,6 @@
 name: feedback
 description: A Flutter package for getting better feedback. It allows the user to give interactive feedback directly in the app.
-version: 3.0.1
+version: 3.1.0
 homepage: https://uekoetter.dev/
 repository: https://github.com/ueman/feedback
 issue_tracker: https://github.com/ueman/feedback/issues