#404, allowing + in e-mail address (#405)
#404, allowing + in e-mail address (#405)

* Update sweetalert2.js

#404, Added + character to e-mail regex

* Update sweetalert2.js

#404, Reverted small mistake

limonte/sweetalert2,johan-weitner/SweetAlert3,birjolaxew/sweetalert2,johan-weitner/SweetAlert3,birjolaxew/sweetalert2