Fix import order in setup.py

[saraedum]

Importing Setuptools breaks some of distutils so they need to be imported in the correct order.

Checklist

• [x] Added an entry in doc/news/.
• [x] Added a test/benchmark for this change. (I don't know how to test this. It's a spurious warning on some versions of distutils.)

[codecov[bot]]

Codecov Report

Merging #228 (9f9fa91) into master (aed01dc) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #228   +/-   ##
=======================================
  Coverage   92.08%   92.08%           
=======================================
  Files         105      105           
  Lines        2060     2060           
=======================================
  Hits         1897     1897           
  Misses        163      163           

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update aed01dc...9f9fa91. Read the comment docs.