- Feature, support defaults https://github.com/FHPythonUtils/Cli2Gui/issues/11
- Use full module namespace in-place of relative imports
- Use `Enum` for widget types. eg. `types.ItemType.Bool`
- Update internal types
- Add more supported types for other parsers. e.g `click`
- Argparse supports: Bool, Int, Choice, File, Text
- Click supports: Bool, Int, Choice, Text
- DocOpt supports: Bool, Text
- GetOpt supports: Bool, Text
- Optparse supports: Bool, Int, Choice, Text