Release v0.4.6 (Ubuntu 20.04)

• Reworks interactions with the logger;
• Cythonizes codeplag Python code for better performance;
• Adds parallelizing of the work comparison process, as well as expanded code documentation;
• The progress indication for many workers was implemented;
• Shows in progress time spent, predicted time left, and count of workers;
• Adds the possibility of changing the number of workers;
• Checks that at least one argument is provided for setting modifications;
• Describes how to setup pre-commit in the README.md and adds help to the Makefile about the pre-commit;
• Updates unit tests requirements in the README.md;
• Adds support for generating source reports;
• Adds translations of the CLI help messages into Russian.