Update black, flake8 and mypy

[lpasselin]

Had to edit a few lines to satisfy mypy

[codecov[bot]]

Codecov Report

Merging #198 (20d4e36) into develop (3033366) will increase coverage by 0.25%. The diff coverage is 42.85%.

:exclamation: Current head 20d4e36 differs from pull request most recent head 3f41560. Consider uploading reports for the commit 3f41560 to get more accurate results

@@             Coverage Diff             @@
##           develop     #198      +/-   ##
===========================================
+ Coverage    80.02%   80.27%   +0.25%     
===========================================
  Files           12       12              
  Lines          786      786              
===========================================
+ Hits           629      631       +2     
+ Misses         157      155       -2     

Impacted Files	Coverage Δ
pyk4a/capture.py	62.01% <0.00%> (ø)
pyk4a/calibration.py	71.59% <33.33%> (ø)
pyk4a/module.py	25.00% <50.00%> (ø)
pyk4a/playback.py	94.48% <100.00%> (+0.78%)	:arrow_up:
pyk4a/pyk4a.py	89.35% <0.00%> (+0.46%)	:arrow_up:

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