Chat support

• Introduce support for OpenAI Chat (GPT-3.5-Turbo and GPT-4)
• Fix a bug in the permissions that wouldn't let non-admins use it

v0.6.5

A lot of major improvements including:

• Support for multiple types of summaries,
• Support for davinci-003,
• Some reports,
• A new Review screen to quickly generate and approve multiple summaries.

v0.1.0 - Beta

This is a Beta release.

• A "Summary" box will appear in articles. (Below the body in Classic view, in the sidebar in Gutenburg view)
• A button labeled "Generate summary" will send the article to GPT-3, and return a summarised version
• The editor can then edit the summary manually before saving
• A dedicated RSS feed will serve the summarised versions, which can be ingested into custom newsletters, etc.
• An administrator can limit the wordcount and number of submissions per post for cost control