Improve CI

[mfeurer]

Improve CI by requiring code changes to adhere to PEP8. I see this as a first stop towards uniformly formatted code.

[codecov-io]

Codecov Report

Merging #525 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development     #525   +/-   ##
============================================
  Coverage        83.75%   83.75%           
============================================
  Files               61       61           
  Lines             5362     5362           
============================================
  Hits              4491     4491           
  Misses             871      871

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[mfeurer]

The output of the newly added script is now visible in the succeeding unit tests: https://travis-ci.org/automl/SMAC3/jobs/571394398

[mlindauer]

How strict is PEP8 here? I think we agreed at some point that we allow for some more characters per line.

[mfeurer]

Good that you're asking. I already catered for that and this change allows for 120 lines: https://github.com/automl/SMAC3/pull/525/files#diff-8572f4480db0a9c3d9b26e97c77de7d1R129

[mlindauer]

Okay, I approved it. Nevertheless, I hope I won't be too annoyed by it in the future ;-)

[mfeurer]

I hope I won't be too annoyed by it in the future ;-)

Me too, but for OpenML, this works really well.