Create CiviCRM Block for new Gutenberg Editor
WP is introducing a new editor in v 5.0 - https://github.com/WordPress/gutenberg
As of this post: https://make.wordpress.org/core/2018/07/06/whats-new-in-gutenberg-6th-july/ Gutenberg has been declared to be at the MVP stage and a merge proposal will be submitted "soon". The current target date is "august", but that can move.
Based on the above, it would be a good time to explore what will be needed to convert our CiviCRM shortcode button to a Gutenberg block.