Drop Python 2 Support

[HaddadJoe]

Summary

Python 2 end of life was almost 3 years ago. The sdk should drop support for that and remove the six package.

Use cases

We're trying to use the python sdk in a modern project however due to old requirements, our dependency manager is failing to install the sdk with other incompatible libraries.

Proposed solution

• Drop support for python2 and make necessary modifications to support python3
• Remove six package
• Test code on newer versions of python
• Optional: Upgrade request version

Is there a workaround to accomplish this today?

Not that i'm aware off (without potentially breaking some library dependencies)

References & Prior Work

Again, happy to open PRs if it's a direction you'd explore

[volodymyrZotov]

Hey @HaddadJoe! Thank you for raising this! There is a PR I opened for that #61 .