* Added: Action hook 'piereg_before_deleting_user_unverified_list' before deleting users from the Unverified Users' list.

* Fixed: Database errors

* Added: Invitation Code Description.

* Added: Option to control Invitation Code Length in Auto Generate Codes' section. (Premium)

* Added: Export user data per Invitation code. (Premium)

* Added: Bulk export user data for all invitation codes. (Premium)

* Added: Assign a user role to an Invitation Code. (Premium)

* Updated: Options added to Invitation Codes Search filter - Used, Unused, Expired, Created Date and User Role. (Premium)

* Fixed: Pop Up for Sent Through Email Column in Invitation Codes' grid. (Premium)

* Fixed: Registration Form Names in Email Notifications' Replacement Key dropdown. (Premium)

* Fixed: Page speed optimization. (Premium)

* Fixed: Pie Register Form Filter in Users Menu. (Premium)

* Added: Option to add multiple files via File Upload field. (Premium) 

* Added: Notification email to admin on user profile modification.

* Updated: Conditional logics added for List, Math Captcha, HTML Script and Section break field. (Premium)

* Fixed: Several bug fixes and PHP warnings.

* Fixed: Page break issue in unverified users list.

* Fixed: Warnings on user profile page.

* Fixed: Page speed optimization in admin area. 

* Added: Option to remove password field from registration form. 

* Fixed: Lockout user after invalid login attempts feature.

* Fixed: Redirection issue on post/page restriction.

* Fixed: Page speed optimization.

Updated: nonce check added for logout urls.