2.4.0

This update is part of the biggest process of cleaning up my GitHub projects:

• Some of the repos were merged with other repos. 🎈
• Obsolete repositories (actually these that didn't have any functionality) were been deleted. 🔥
• Most of them got better documentation using blah configuration. 📖 📚 📝

Changes

• Improved documentation 📝
• Added/updated the the CONTRIBUTING.md file. 📖
• Integrated json2md with blah to get the best flexibility in generating documentation. 💫

Regarding the integration of json2md into blah, read this blog post I wrote.