Python package management improvements

[ShahriyarR]

To make this project professional-looking, shiny and as hell - we need to automate package building processes. Currently, the PyPi support even going through my hands manually. The sample setup.py file who everybody should read -> https://github.com/pypa/sampleproject/blob/master/setup.py Add more:

• There is no PyPi classifiers in setup.py: classifiers = []
• We can add content type and long description etc:

  
  with open("README.md") as f:
  long_description = f.read()

setuptools.setup( ... long_description = long_description, long_description_content_type = "text/markdown" ... )

Sample setup.py screenshot taken from https://www.youtube.com/watch?v=P3dY3uDmnkU

![sample_setup_py](https://user-images.githubusercontent.com/3852029/86468737-1c1ac480-bd49-11ea-806e-1de8fb529cea.png)

* Minimizing package size by excluding:

tests, docs, etc. should be excluded to minimize the package size.

* Figure out the way to handling secrets for upload. Possible ways of doing this:

![handling_pypi_secrets](https://user-images.githubusercontent.com/3852029/86469244-0e197380-bd4a-11ea-9875-a4b652ddd9d2.png)

> Will be updated

[ShahriyarR]

Now let's turn to automation. As you see we have an only a small amount of tests < 10% coverage - shame, shame, shame. But still here are my further considerations about this project - test automation and package automation: Excellent talk -> https://www.youtube.com/watch?v=-BHverY7IwU

• The Tox is a most popular one -> https://tox.readthedocs.io/en/latest/
• The Nox is also -> https://nox.thea.codes/en/stable/
• Invoke -> http://www.pyinvoke.org/

I am going to use CircleCI for test and package build jobs. As a reference use this talk: https://youtu.be/P3dY3uDmnkU?t=1469

[ShahriyarR]

no need for this setup, I have switched to pyproject.toml + flit