npm install
npm run serve
npm run build
- undo & redo
- add node
- add edge
- create group
- ungroup
- copy node & copy group
- delete
- change node
- fill
- text fill
- stroke
- font size
- font style
- ...
- change edge
- stroke
- line dash
- line style
- text fill
- font size
- ...
- change group
- lock model & unlock model
- drag node to group && drag node leave from group
- background
- font
- ...
- thumbnail
- add custom picture