First of all. Thanks to @wagnernegrao for his great work at the footprint of this poll request. I just fixed some places to make our documentation available in Sphinx and Github pages at the same time.

Here is a summary for this pull request from both of us:

• AUTHORS.rst from root folder converted to AUTHORS.md.
  Authors list synced on August 27, 2019
• AUTHORS.rst from docs folder replaced with a symlink to AUTHORS.md in the root folder. It is possible to configure Sphinx to render documents outside the docs folder, but in case of MarkDown formatting, it will break documentation rendering.
• BACKERS.rst from root folder converted to BACKERS.md.
• BACKERS.md added to Sphix documentation via a symlink
• CONTRIBUTING.rst from root folder converted to CONTRIBUTING.md
• contributing.rst from docs folder replaced with a symlink to CONTRIBUTING.md from the root folder. The reasons are the same as with AUTHORS.rst and all other replaced files from docs folder.
• contributing.rst, contributor_guidelines.rst, contributor_setup.rst, contributor_testing.rst files from docs folder removed. This will change a little bit how Contribution guide displayed in Sphinx doc. But now we need to update guide in one place and it will work everywhere.
• Make file update at the core - as we do not render contributing from several files, this target removed.
• Information of this target is also removed from contributions guide.
• HISTORY.rst from root folder converted to HISTORY.md
  History synced on August 27, 2019
• history.rst from docs folder replaced with a symlink to HISTORY.md in the root folder.
• README.rst converted to README.md in the root folder, added as a symlink to docs folder.
• case_studies.rst converted to case_studies.md in the root folder, added as a symlink to docs folder.
• .pre-commit-config.yaml updated:
  • Now it ignores markdown hard newlines (double space at the end of the line)
  • As we now use symlinks it will check that every symlink works.
• All MD files passed markdown lint
• All MD files are formated at the same style way. (Long lines, asterisks as unordered lists, ordered lists with all numbers, no bare-links allowed, all links in the same format)
• docs/conf.py and docs/requirements.txt - Include new render configuration and some changes to pass lint tests.
• docs/conf.py - Copyright and year update
• docs/index.rst and docs/installation.rst - Links are in CAPS symbols. This required to make links works in Github and in Sphinx at the same time.
• setup.py - update to use Markdown for description.

Fuh, it was a long night :)