Release v0.4.1 — Read and write multiple Mermaid fence styles

Features

• Open Mermaid diagrams written with admonition (:::mermaid) or tilde (~~~mermaid) fences in addition to the standard triple-backtick fence — useful when working with files from Docusaurus, MkDocs or other tools that use different delimiters. (#98)
• Choose which fence style the editor uses when saving Mermaid blocks, and optionally define a custom open/close pair, from Settings → Code. (#98)