Fixed a bug with saving From Email addresses.
Fixed a bug that set the default email_from_name rather than the email_from.
Improved the check used to see if a user’s value is empty.
Fixed some PHP notices.
Rating fields can now be set to “required” and will force the user to select at least a 1 star rating.
Using the jQuery date picker in the admin should now respect the date format in the Plugin Settings.
Updating to version 2.3.1.
Merge branch 'release/v2.3.1'