Release Journalist version 0.1.9.
Release Journalist version 0.1.9.

 * Build with Node.js 12, 14, and 15 on CI/CD.
 * Upgrade `rescue` to `7.0.0-alpha.3`.
 * Upgrade `errno` to `1.0.0`.

Closes #87.

bigeasy/journalist,bigeasy/journalist