Challenges rendering Mermaid mindmap diagrams

[d33bs]

Hello, thanks for the awesome work in this project! I noticed that when attempting to use Mermaid mindmap diagrams that Jekyll Spaceship is unable to render the diagrams (originally discovered as part of CU-DBMI/set-website#30). In this circumstance, the SVG link generated through Mermaid appears to indicate invalid encoded code. I'm unsure if this is a Mermaid or Jekyll Spaceship issue but figured I'd start here (feel free to let me know if you think this is a Mermaid bug and needs an issue there).

To demonstrate this I've created an example repository and GH pages deployment and wanted to provide the following links in case it helps troubleshoot:

• The repo is located here: https://github.com/d33bs/demo-jekyll-spaceship-mermaid-mindmap
• The attempted rendered Mermaid diagram can be witnessed here.
• The Mermaid error code can be seen from accessing the rendered SVG link.
• The related Mermaid code to generate the mindmap can be seen here.
• A live link to the properly rendered Mindmap (what we might expect to see through the rendered page) can be found here.

Thanks in advance for any thoughts you might have! Please don't hesitate to let me know if you have any questions or if I can further clarify things.