WPForms MailChimp Addon 2.4.0

### IMPORTANT
- Support for PHP 5.6 has been discontinued. If you are running PHP 5.6, you MUST upgrade PHP before installing WPForms Mailchimp 2.4.0. Failure to do that will disable WPForms Mailchimp functionality.
- Support for WordPress 5.4 and below has been discontinued. If you are running any of those outdated versions, you MUST upgrade WordPress before installing WPForms Mailchimp 2.4.0. Failure to do that will disable WPForms Mailchimp functionality.




### Added
- WPForms 1.9.1 compatibility.




### Changed
- The minimum WPForms version supported is 1.9.1.

### Changed
- Checkboxes have been replaced with fancy toggles on the addon settings screen in the Form Builder.
- Minimum WPForms version supported is 1.8.2.

### Fixed
- Compatibility with WordPress Multisite install.
- Compatibility with WPForms 1.6.8 and the updated Form Builder.