bump to Python≥3.7

[basnijholt]

Description

Let's stick with NEP 29 and drop Python 3.6 support.

Checklist

• Fixed style issues using pre-commit run --all (first install using pip install pre-commit)
• pytest passed

Type of change

Check relevant option(s).

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• (Code) style fix or documentation update
• This change requires a documentation update

[codecov-io]

Codecov Report

Merging #312 (073b848) into master (2d0444b) will increase coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #312      +/-   ##
==========================================
+ Coverage   80.46%   80.55%   +0.08%     
==========================================
  Files          35       35              
  Lines        4633     4633              
  Branches      834      834              
==========================================
+ Hits         3728     3732       +4     
+ Misses        779      777       -2     
+ Partials      126      124       -2     

Impacted Files	Coverage Δ
adaptive/learner/learner1D.py	89.97% <0.00%> (+0.57%)	⬆️
adaptive/runner.py	71.53% <0.00%> (+0.71%)	⬆️

---

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 2d0444b...073b848. Read the comment docs.

[akhmerov]

Looks good! I imagine this will need a minor version bump, right?

[basnijholt]

I imagine this will need a minor version bump, right?

Yes, I will do that!