Fix a bug in docstr parsing (#123)

Handle stringified annotations (#120)

Export `start()`, `parse()`, `register()` when importing (#108)

Render brief as markdown when printing help (#103)

Allow `_` in command names in place of `-` (#101)

Add `py.typed` file (#93)

Support customizing short options (#92)

Support `--` token (#91)

Support default subcommand (#80)

Allow `_` in option names in place of `-` (#76)