#JSOON
todo:
- Data source
- Button: paste from clipboard
- from URL
- Parsing
- recursive parsing
- Edit
- Format on paste
- Sort keys
- implement 'icons'
- block edit (copy, remove, nullit, zeroit)
- Display
- key path, mini-tree
- history stack
- display optimization: long string, quote/unquote
- data annotation: timestamp to human format
- Diff
- customize compare function
- Other
- export to window.json