Full Changelog: 0.2.0...0.2.1

• Write to file even if root domain doesn't have addresses

Full Changelog: 0.1.0...0.2.0

• Don't log timeout errors
• Set timeout to 1s instead of 5s
• Create one DNS client per $concurrency instead of one per DNS query
• Progressbar includes number of found subdomains
• Reduced allocations

First release, has the basic features.