Database Lab 0.2

Database Lab updated to 0.2: everything in containers, better API and CLI

*Update: see the discussion on Hacker News!*

We have released version 0.2 of Database Lab. Now all its components run in containers, so installation and use is much easier. Additionally, various improvements were made, including those in API and client CLI.

Work on documentation continues: we reworked Tutorial, and added new texts. One of them is What is Database Lab. This picture should help to compare Database Lab to traditional methods of development and testing involing large databases: