2.0.0-beta4

Please read https://github.com/brefphp/bref/releases/tag/2.0.0-beta1 to see what Bref v2 beta contains.

What changed since the last beta:

• Fixed #1364 (sls bref:cli) by @mnapoli

Full Changelog: 2.0.0-beta3...2.0.0-beta4