* Added support for ```mermaid
* Fixed issue when no shortcode mermaid is present
* Change block render to match shortcode
* Remove mermaid logic from base
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Co-authored-by: CharlesPhilippeLabbe <c.p@o-possum.com>
Co-authored-by: Alex Shpak <alex-shpak@users.noreply.github.com>
Charles-Philippe