feat: added mermaid support for displaying diagrams (#359)

Jeffrey Forman

21.47.2022 d511a6f520bcc2ffab10ce009239904774ed6bb0

 exampleSite/config/_default/params.toml

@@ -73,3 +73,6 @@
icon = "fas fa-envelope"
title = "e-mail"
url = "mailto:mail@example.com"

[mermaid]
# enable = true