- https://www.billerickson.net/contact-form-integration/
- https://developers.wpforms.com/docs/hook-wpforms_process_complete/
- https://firebase-php.readthedocs.io/en/latest/overview.html
- https://stackoverflow.com/questions/21721495/how-to-deploy-correctly-when-using-composers-develop-production-switch#21921309
- https://getcomposer.org/doc/articles/autoloader-optimization.md