Special case for Nethermind\Gnosis revert errors

[Aureliaar]

What was wrong?

Certain forms of errors, eg. generated on Spaceneth\Nethermind setups, would fail to return revert reasons on contracts.
Of the form: 'Reverted 0x4f776e6572496420646f6573206e6f7420657869737420696e207265676973747279'

How was it fixed?

A small edge case handling was added in the error_formatting.

Todo:

• Add entry to the release notes
  This doesn't really seem worth mentioning in release notes. Let me know if that's wanted.

Cute Animal Picture

[kclowes]

Thanks for this! Do you mind adding a test for this case in this file? I think we should also add a newsfragment, but I'm happy to do that if you don't want to. I can also fix the lint errors too, just let me know.

[Aureliaar]

Will do!
Will also try to clean up the linter errors, but feel free to fix up the formatting how you like

[kclowes]

sounds good, thanks! eventually we'll have autoformatting on commit, but it hasn't reached the top of our priority queue yet.

[Aureliaar]

Having some trouble running the tests locally, hope you don't mind me using your circleci to verify correctness!

[Aureliaar]

Tests look fine!

I'd be grateful if you could fix the linter error, it seems to survive a pass of Black Formatter and it's actually pre-existing code

Likewise with the newsfragment.

Thanks for the prompt responses, and looking forward to seeing this merged

[kclowes]

Yep, no problem! Thanks again!