Build: Drop support for Python 3.7

[adrien-berchet]

No description provided.

[codecov-commenter]

Codecov Report

Merging #84 (73f6782) into master (526299e) will increase coverage by 2.27%.
Report is 10 commits behind head on master.
The diff coverage is 17.88%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #84      +/-   ##
==========================================
+ Coverage   44.75%   47.02%   +2.27%     
==========================================
  Files          26       27       +1     
  Lines        1803     1784      -19     
  Branches      288      309      +21     
==========================================
+ Hits          807      839      +32     
+ Misses        974      922      -52     
- Partials       22       23       +1     

Flag	Coverage Δ
pytest	47.02% <17.88%> (+2.27%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
tmd/Neuron/Neuron.py	80.35% <ø> (ø)
tmd/Topology/methods.py	80.23% <ø> (ø)
tmd/Topology/persistent_properties.py	100.00% <ø> (ø)
tmd/__init__.py	100.00% <100.00%> (ø)
tmd/io/conversion.py	100.00% <ø> (ø)
tmd/io/h5.py	93.67% <100.00%> (+0.08%)	⬆️
tmd/utils.py	100.00% <100.00%> (ø)
tmd/io/swc.py	93.61% <50.00%> (+0.13%)	⬆️
tmd/io/io.py	90.09% <66.66%> (+3.09%)	⬆️
tmd/Topology/analysis.py	69.63% <66.66%> (+7.00%)	⬆️
... and 3 more