Ai21

([`52a0fa3`](https://github.com/AI21Labs/ai21-python/commit/52a0fa3fe71f9491c89b12f183758eb9491a929d))

Features

- Support new chat API ([93](https://github.com/AI21Labs/ai21-python/pull/93),
[`d14bb7c`](https://github.com/AI21Labs/ai21-python/commit/d14bb7c80c18cef8589515eeade1b917499ea09c))

([`a2b783c`](https://github.com/AI21Labs/ai21-python/commit/a2b783c6e1d7a095f69fc6cc3be86460e12949af))

Testing

- Check imports ([76](https://github.com/AI21Labs/ai21-python/pull/76),
[`a72e23b`](https://github.com/AI21Labs/ai21-python/commit/a72e23b063ad3c1db076ced932bf0f4e6703c576))

- Integration test for library files ([83](https://github.com/AI21Labs/ai21-python/pull/83),
[`3a50669`](https://github.com/AI21Labs/ai21-python/commit/3a50669db9351223ca971908eaa6e4842011d259))

* fix: integration test for file

* refactor: Simplified

* fix: chat tests

([`9551776`](https://github.com/AI21Labs/ai21-python/commit/9551776a9f6c4c3a1671e308dad37a900e786b0f))

([`69dc136`](https://github.com/AI21Labs/ai21-python/commit/69dc1361e47cdc60dde3c366dffe89b364fdce26))

([`5e9a768`](https://github.com/AI21Labs/ai21-python/commit/5e9a7681e4ab1ffcdcff1c07e0cb94452eb2632c))

Features

- Support NOT_GIVEN type ([69](https://github.com/AI21Labs/ai21-python/pull/69),
[`c7fd28a`](https://github.com/AI21Labs/ai21-python/commit/c7fd28a124c4971a9d9b85ad0d5fc5bd187535b0))

* feat: support NOT_GIVEN type

* fix: test when penalty is not passed

* fix: fix import, make more variants of penalty

* refactor: completion test refactor

* fix: rename endpoints

* fix: uncomment skip

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Co-authored-by: Asaf Gardin <asafgai21.com>

([`8965828`](https://github.com/AI21Labs/ai21-python/commit/896582839dd298121210187572adc178351f8d58))