Some markmap elements not rendering

[ldrozdowski]

Do you plan extending markmap support? I was hoping to achieve similar behavior to https://markmap.js.org/repl e.g. When copy paste an example given there then [x] checkbox or table not rendering properly. When edit, - dashes are converted into heading and map is modified messy way.

Steps:
Go to source mode and paste (remove \ from code blocks)

---
mindmap-plugin: basic
---

# markmap

## Links

- [Website](https://markmap.js.org/)
- [GitHub](https://github.com/gera2ld/markmap)

## Related Projects

- [coc-markmap](https://github.com/gera2ld/coc-markmap) for Neovim
- [markmap-vscode](https://marketplace.visualstudio.com/items?itemName=gera2ld.markmap-vscode) for VSCode
- [eaf-markmap](https://github.com/emacs-eaf/eaf-markmap) for Emacs

## Features

Note that if blocks and lists appear at the same level, the lists will be ignored.

### Lists

- **strong** ~~del~~ *italic* ==highlight==
- `inline code`
- [x] checkbox
- Katex: $x = {-b \pm \sqrt{b^2-4ac} \over 2a}$ <!-- markmap: fold -->
  - [More Katex Examples](#?d=gist:af76a4c245b302206b16aec503dbe07b:katex.md)
- Now we can wrap very very very very long text based on `maxWidth` option
- Ordered list
  1. item 1
  2. item 2

### Blocks

\`\`\`js
console.log('hello, JavaScript')
\`\`\`

| Products | Price |
|-|-|
| Apple | 4 |
| Banana | 2 |

![](https://markmap.js.org/favicon.png)

Switch to mindmap and and any new node
Switch to markdown in source mode

Observed
After edit content is modified

---
mindmap-plugin: basic
---

# markmap

## Links

### [Website](https://markmap.js.org/)

### [GitHub](https://github.com/gera2ld/markmap)

## Related Projects

### [coc-markmap](https://github.com/gera2ld/coc-markmap) for Neovim

### [markmap-vscode](https://marketplace.visualstudio.com/items?itemName=gera2ld.markmap-vscode) for VSCode

### [eaf-markmap](https://github.com/emacs-eaf/eaf-markmap) for Emacs

### Sub title

## Features

### Lists

#### **strong** ~~del~~ *italic* ==highlight==

#### `inline code`

#### [x] checkbox

#### Katex: $x = {-b \pm \sqrt{b^2-4ac} \over 2a}$ <!-- markmap: fold -->

##### [More Katex Examples](#?d=gist:af76a4c245b302206b16aec503dbe07b:katex.md)

#### Now we can wrap very very very very long text based on `maxWidth` option

#### Ordered list

##### 1. item 1

##### 2. item 2

### Blocks

#### \`\`\`js
console.log('hello, JavaScript')
\`\`\`

#### Sub title

##### Sub title

###### Products

###### Price

##### Sub title

###### Sub title
- Apple
- 4

###### Sub title
- Banana
- 2