Website: Add blog post for 16.0.0 (#500)

Co-authored-by: David Li <li.davidm96@gmail.com>
Co-authored-by: Curt Hagenlocher <curt@hagenlocher.org>
Co-authored-by: Matt Topol <zotthewizard@gmail.com>
Co-authored-by: Alenka Frim <AlenkaF@users.noreply.github.com>
Co-authored-by: Dane Pitkin <48041712+danepitkin@users.noreply.github.com>
Co-authored-by: Bryce Mecum <petridish@gmail.com>
Co-authored-by: Sutou Kouhei <kou@clear-code.com>