Gravity Forms 2.8.8

- Added the gform_file_path_pre_delete_file filter allowing files stored outside the /wp-content/uploads/gravity_forms/ directory to be deleted.
- Fixed an issue with the tab index of the reCAPTCHA field.

- Added security enhancements. Credit: Gennady Kovshenin.
- Fixed an issue with the ID attribute of the accepted file types message container when multiple File Upload fields are present on the page.
- Fixed an issue where a new field could be assigned the same id as a field to be deleted resulting in the new field being lost when the original field is deleted on save.
- Fixed an issue with File Upload field URLs in text format notifications containing escaped ampersands.

- Added support for Mastercard 2-series number.
- Fixed missing confirmation message anchor for AJAX enabled single page forms.
- Fixed an issue where the urls of deleted files could remain in the multi-file enabled upload field entry value when editing the entry, if a new file was added at the same time.
- AF: Added "description" settings field property to display description below settings field.
- AF: Added "no_choices" select settings field property to display message when no choice are available for field.