Add backoff_factor in connection to configure retry interval

[mfussenegger]

Squashed version of #342 with
some style fixes.

Cannot push to the fork, so created a new PR.

[daminichopra]

Hi @mfussenegger @autophagy , Thanks for merging and closing PR. I just want to confirm that when the new release for cratedb version 4.1.4 will be there. Thank you :)

[mfussenegger]

Hi @mfussenegger @autophagy , Thanks for merging and closing PR. I just want to confirm that when the new release for cratedb version 4.1.4 will be there. Thank you :)

crate-python releases are independent of CrateDB releases. I guess we could make a release soonish.

[daminichopra]

Hi @mfussenegger , There is an Issue in Quantum Leap which is dependent on release of cratedb verion 4.1.4. Can u Please confirm and give some estimate time by when new release will be there. Thank you :)

[autophagy]

@daminichopra CrateDB 4.1.4 was released on 20th of March. However, CrateDB is indepedent of the crate-python driver. The change you requested to this driver is available in 0.24.0 of the crate python driver. You can install this with:

pip install -U crate==0.24.0