Findomain v1.3.0

• Add update checker module. It will tell you if there are new stable releases of Findomain, just use findomain --check-updates.
• Add option to use Findomain as subdomain/domain resolver. b799014
  Demo: https://asciinema.org/a/oOsjlVG3PacSVRSZkZdcycY0d
• Improvements. e46bfda