Hexlet tests and linter status:

Installation

make install

Demo

• Brain even - https://asciinema.org/a/iTS8eEd3wzqAHgRvcd75xOIoW
• Brain calc - https://asciinema.org/a/uiRUN95R010UhEJ2bQwt6jo9s
• Brain gcd - https://asciinema.org/a/wjwSisucoH1qlALgkqYjUTeE5
• Brain progression - https://asciinema.org/a/5uzUZcpBPRLIGwT0rls0IRd4I
• Brain prime - https://asciinema.org/a/OXmlLmThN54dVxJ7NCk77X4hj