ENG-6679: Introduce support for changefeeds

[erickpintor]

Description

Add changefeeds support to the Python driver.

Motivation and context

Changefeeds allows to interactively poll from a stream instead of having it open at all times. It's useful for cron jobs and other forms of periodic tasks to sync 3rd party systems.

How was the change tested?

Unit tests are included.

Screenshots (if appropriate):

NA

Change types

• • Bug fix (non-breaking change that fixes an issue)
• • New feature (non-breaking change that adds functionality)
• • Breaking change (backwards-incompatible fix or feature)

Checklist:

• • My code follows the code style of this project.
• • My change requires a change to Fauna documentation.
• • My change requires a change to the README, and I have updated it accordingly.

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[jrodewig]

README looks good aside from some minor nits. I'll work on getting the docs.fauna.com docs ready.

[ptpaterson]

All of my code comments are resolved. I'm not certain what you would consider the new, idiomatic error handling on the user side.

[erickpintor]

I'm not certain what you would consider the new, idiomatic error handling on the user side.

We can gather feedback from python folks during the python bug bash this Friday.

[erickpintor]

I'll need another 🐑. I've marked the feature as beta in the readme file.

[jrodewig]

🐑 it.