New: Implements the PDF Form Submission addon.Adds Prefix and Suffix options to Field Calculations.Redesigns and improves the UI of the form builder.Fix: PHP Warning: Use of undefined constant CAL_GREGORIAN - assumed 'CAL_GREGORIAN.Fix: Add missing language strings in the Submissions view in the backend.Fix: PHP Warning: array_change_key_case() expects parameter 1 to be array, null given. (Affects backend only).Fix: JS error: Uncaught TypeError: Cannot read property '_' of undefined. (Affects Joomla 3.9.x versions).Fix: Prevent CSS conflicts in the Month and Year inputs in the Date Time Field caused by 3rd party templates.Fix: Mandatory Checkboxes field requires user to check all checkboxes when script is loaded asynchronously.Fix: Zapier and iContact doc links doesn't work in the Addons view in the backend.Fix: The Email and URL fields are not validated if they are optional.Fix: Addon options popup shows up empty when site is behind a proxy with HTTPS redirection rules.Change: Hide trashed items in the submissions view in the backend by default.Improve accessibility by adding role="alert" to error message div.Stop re-ordering the System Plugin during installation.Updates languages