Template update

[mslw]

This PR brings the extension up to date with the extension template. There are these major changes:

• Switch from nose to pytest
• Update to the minimal requirements: Python 3.6 → 3.7, DataLad 0.16 → 0.17
• Update of Versioneer

Other changes are mostly related to boilerplate code.

FTR, this was done with git merge --allow-unrelated-histories --squash. I did it in two stages, to see how much conflict resolution needs to be redone when changes are squashed. I don't have a precise record, but I feel that I had to repeat resolving some changes (mostly rejections), but not all, the amount of conflicts on the second part was reduced, as the diff was smaller.

TODO:

• [x] Change tests to work again: currently test files still import nose, which fails

[codecov[bot]]

Codecov Report

Merging #28 (0118437) into master (957486a) will decrease coverage by 6.46%. The diff coverage is 23.61%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
- Coverage   44.88%   38.41%   -6.47%     
==========================================
  Files           5        5              
  Lines         127      164      +37     
==========================================
+ Hits           57       63       +6     
- Misses         70      101      +31     

Impacted Files	Coverage Δ
datalad_ebrains/kg2ds.py	43.63% <7.69%> (-0.60%)	:arrow_down:
datalad_ebrains/kg_query.py	26.31% <21.81%> (-5.36%)	:arrow_down:
datalad_ebrains/__init__.py	100.00% <100.00%> (ø)
datalad_ebrains/_version.py	100.00% <100.00%> (ø)
datalad_ebrains/tests/test_register.py	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[mslw]

The only failing checks are from codecov, and they seem to be related to the actual extension code rather than the changed boilerplate. Since there aren't basically any tests, I would consider it a good sign, although someone might check whether there's some codecov configuration and whether it is done right.

[mih]

Thx!