Configframework

Fixing type hint allows Pycharm and other IDEs likely too to figure out in which context should it suggest methods from the type of Variable, or from the type in Variables descriptior

Also this added toml and toml-types as devs dependencies.

**Full Changelog**: https://github.com/Rud356/ConfigFramework/compare/4.0.1...4.0.2

Fixed missing docstrings for some functions and new toml loaders.
Fix security vulnerability from pygments package.

**Full Changelog**: https://github.com/Rud356/ConfigFramework/compare/4.0.0...4.0.1

Added toml file format support
Changed way of variables initialization and configs initialization so it is only required to supply config source once when instancing config

What's Changed
* Verson 4.0 pre-release by Rud356 in https://github.com/Rud356/ConfigFramework/pull/13


**Full Changelog**: https://github.com/Rud356/ConfigFramework/compare/3.0.4...4.0.0

Fixed problems with mypy missing py.typed file and new error in loader_specific_deserializer.py file that came after 1.0.0 release of mypy
Change license from GPL to MIT to allow more people use library
Fix docs miss type


This will be a last release before making new 4.0.0 release