* README: add info about LTS policy (Miroslav Bajtoš)
 * Upgrade dev dependencies (Miroslav Bajtoš)
 * [SEMVER-MAJOR] Upgrade `pg` to `8.0` (Miroslav Bajtoš)
 * Update dependencies (Miroslav Bajtoš)
 * Add Node.js 13.x to Travis CI matrix (Miroslav Bajtoš)
 * Drop support for Node.js 8.x (Miroslav Bajtoš)
 * chore: update strong-globalize version (Diana Lau)