Backward compatibility rules

Hi @elek,

I agree with Nick and see a 4th option that you may want to consider for your PR.

The 4th option is based on the information in this thread:
https://forum.rclone.org/t/tardigrade-storj-vs-s3-remote-for-the-same/26574
indicating that StorJ may fully support the rclone S3 backend hereby eliminating the need for a specific StorJ backend.

Proposed steps for option 4:

Benefits:

  • StorJ users get a better rclone backend due to the higher number of users (and developers) on the S3 backend.
  • rclone complexity is slightly reduced by having fewer specialised backends. This eases maintenance which typically leads to increased overall robustness/stability.

Drawbacks:

  • None that I can see (with my very limited knowledge of Tardigrade/StorJ)