Add staging check
Add staging check

customelements/v2,andymutton/beta,webcomponents/webcomponents.org,webcomponents/webcomponents.org,andymutton/v2,andymutton/beta,andymutton/v2,andymutton/beta,customelements/v2,andymutton/v2,webcomponents/webcomponents.org,andymutton/beta,customelements/v2,andymutton/v2,customelements/v2