Félix Auneau

Refactored config.py: Replaced 'config.toml' by _CONFIG_FILE

1

In the class `Config` in `config.py`, I replaced the multiple occurences of `'config.toml'` by the class constant `_CONFIG_FILE`. This aims to make the code: * easier to maintain * clearer...

Add tests for the Config class

5

The main goal of this pull request is to add tests to the Config class. Additional changes: * Created class constant _CONFIG_FILE to replace string literal "config.toml". This is necessary...