2.0.0

Removing the following endpoints that are either deprecated or removed from the API:

• Engines
• Answers
• Classifications
• Search

1.3.0

Add support for function calling in the chat completions api

Announcement: https://openai.com/blog/function-calling-and-other-api-updates
Documentation: https://platform.openai.com/docs/guides/gpt/function-calling