Feature: Improve error reporting when query fails, include domain and query type and DNS server address where applicable. (#174 by @clue)

Feature: Improve error handling when sending data to DNS server fails (macOS). (#171 and #172 by @clue)

Fix: Improve DNS response parser to limit recursion for compressed labels. (#169 by @clue)

Improve test suite, use GitHub actions for continuous integration (CI). (#170 by @SimonFrings)