Dev/v0.2 (#393)

* api_base -> base_url (#383)

* InvalidRequestError -> BadRequestError (#389)

* remove api_key_path; close #388

* close #402 (#403)

* openai client (#419)

* openai client

* client test

* _client -> client

* _client -> client

* extra kwargs

* Completion -> client (#426)

* Completion -> client

* Completion -> client

* Completion -> client

* Completion -> client

* support aoai

* fix test error

* remove commented code

* support aoai

* annotations

* import

* reduce test

* skip test

* skip test

* skip test

* debug test

* rename test

* update workflow

* update workflow

* env

* py version

* doc improvement

* docstr update

* openai<1

* add tiktoken to dependency

* filter_func

* async test

* dependency

* migration guide (#477)

* migration guide

* change in kwargs

* simplify header

* update optigude description

* deal with azure gpt-3.5

* add back test_eval_math_responses

* timeout

* Add back tests for RetrieveChat (#480)

* Add back tests for RetrieveChat

* Fix format

* Update dependencies order

* Fix path

* Fix path

* Fix path

* Fix tests

* Add not run openai on MacOS or Win

* Update skip openai tests

* Remove unnecessary dependencies, improve format

* Add py3.8 for testing qdrant

* Fix multiline error of windows

* Add openai tests

* Add dependency mathchat, remove unused envs

* retrieve chat is tested

* bump version to 0.2.0b1

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Co-authored-by: Li Jiang <bnujli@gmail.com>