Aku

BREAKING

- Stop supporting Python 3.7.

Features

- Support `AkuSet` and `AkuFrozenSet`.
- Support `NewType`.
- Support private namespace.
- Support flag `allow_unknown`.

Fix

- Resolve reduplicated name issue

Feature

- Support default value for `AkuFn` and `AkuUnion`, and their formatter
- Add `always_use_subparse` option
- Remove delays in batch

Fix

- Resolve root function name
- Resolve `abbreviate_literal` issue

* Display required and unfilled arguments only
* Fix `args` bug of `parse_aku`
* Move `delay` from global to local property

* Fixed `AkuUnion` bugs
* Support adding ArgumentGroup automatically