fin model

See #73, release log:

• 6c3f64c by @yegor256: Merge pull request #72 from pa...
• 839e58a by @paulodamaso: Small corrections.
• c32b9f5 by @yegor256: words
• 081dca1 by @yegor256: link
• 9b47dd1 by @yegor256: cio article
• df9fbb2 by @yegor256: #71 typos

Released by Rultor 1.68.1, see build log