[MRG + 1] Added .editorconfig

[KOLANICH]

No description provided.

[codecov-io]

Codecov Report

Merging #151 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #151   +/-   ##
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  Coverage   84.47%   84.47%           
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  Files          12       12           
  Lines        1198     1198           
  Branches      288      288           
=======================================
  Hits         1012     1012           
  Misses        142      142           
  Partials       44       44

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[vinayak-mehta]

@KOLANICH Is this a config for the GitHub file editor?

[KOLANICH]

It is an editor-neutral config (see https://editorconfig.org for the list of editors supporting it); GH supports it too. I use it with a Notepad++ plugin, without that it is problematic to use NPP (and any other editor without the feature to auto-deduce the settings from actual documents contents) with the projects using spaces because I use tabs and for me NPP is set up to use tabs.

Please note that it would be good to add it into your repo boilerplate (of course after customization, the one in this PR matches PEP8 used in this repo, but pep8 is not mandatory, with editorconfig you can use tabs without fear of shifts in text since size of a tab is configured).

[vinayak-mehta]

@KOLANICH Thanks for the contribution! (And making me aware of https://editorconfig.org/ 😄)