Allow user to preserve markdown structure or use lists instead of headings

[MaksimZinovev]

Thank you for great plugin!

My feature request is to allow user to preserve markdown format after file was edited as a mindmap.

Here is an example to illustrate:

1. Create markdown file

   - mindmap-plugin
   - item 1
   - item 2
   - item 3

2. Open the file as mindmap.
3. Add at least one node - a child of item 3
4. Open as markdown

Result:

# mindmap-plugin
  ## item 1
  ## item 2
  ## item 3
    - item 31

Desired result:

- mindmap-plugin
  - item 1
  - item 2
  - item 3
    - item 31

https://user-images.githubusercontent.com/53397443/127127645-f3057861-3ddf-4674-bea6-309138372c69.mp4

Just in case, below are some details of my environment:

• macOS Big Sur 11.4
• Google Chrome Version 92.0.4515.107 (Official Build) (arm64)
• ObsidianMD v0.12.10
• Enhancing mindmap plugin v.0.1.1

[Pvazevedo]

This still happening. I prefer to edit in markdown to prevent this changing until fix.

[MarkMindCkm]

This still happening. I prefer to edit in markdown to prevent this changing until fix.

please select 0 level in setting tab