WPForms Post Submissions Addon 1.5.0

### Changed
- Minimum WPForms version supported is 1.8.3.

### Fixed
- Post featured Image field was prone to be set with incorrect settings.

### Added
- Compatibility with WPForms 1.6.8 and the updated Form Builder.
- Compatibility with the Rich Text field.

### Changed
- Improved compatibility with jQuery 3.5 and no jQuery Migrate plugin.
- Show settings in the Form Builder only if they are enabled.
- Show a modal in the Form Builder about available additional options only once.

### Fixed
- `0` values were not allowed to save as custom post meta.
- Images added as Post Featured Images didn't have titles.
- Events Calendar plugin compatibility: start/end times had incorrect timezone.

### Fixed
- Modern file upload processing when files were saved to the custom post meta table.