VK 3.0

Bump version

Modernize layout (#124)

* Upgrading layout: creating pyproject.toml, moving vk to src dir, skipping non-working tests, configuring tox and other

* Fixing coverage missing

* Adding pre-commit hook

* Fix sphinx build

* Remove make files from docs

* Adding docs env to tox for docs building

* Update README.md

* Setup autorelease on PyPI

* Adding URLs to pyproject.toml

Bump version

Add forgotten file

More v2.0 refactoring

Version bumped