Easy Digital Downloads - Resend Receipt 1.0.2

Fix: Invalid shortcode output was causing problems with using [edd_resend_form] in the Gutenberg editor.
Fix: Sanitize input when saving meta box settings.
Refactor: Improve how the ajax URL is determined on the front-end.
Refactor: Update plugin author name to "Sandhills Development, LLC".
Dev: Compatibility with EDD 3.0.

• Fix: edd_resend_form shortcode did not display on pages
• Fix: multiple text strings were not translation-ready
• New: added .POT file