95 updates to installation

[kulbachcedric]

Hi @atanikan,
I changed and fixed the issues you mentioned in #95.
Would that changes go into the direction you'd expect?

Best
Cedric

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Codecov Report

Attention: Patch coverage is 18.18182% with 9 lines in your changes missing coverage. Please review.

Project coverage is 79.82%. Comparing base (f07d3c0) to head (e78e7e5).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
deep_river/classification/rolling_classifier.py	16.66%	5 Missing ⚠️
deep_river/classification/classifier.py	20.00%	4 Missing ⚠️

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Additional details and impacted files

@@           Coverage Diff           @@
##           master      #97   +/-   ##
=======================================
  Coverage   79.82%   79.82%           
=======================================
  Files          26       26           
  Lines        1254     1254           
=======================================
  Hits         1001     1001           
  Misses        253      253           

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