v0.4.21 - make thread-safe

v0.4.20 - extend logging of QueryError

v0.4.19 - update error handling and logging

v0.4.18 - use go-rate-limiter

v0.4.17 - add SetActualURL()

Merge branch 'v0.4.16-rate-limiting'

v0.4.12 - fix: fix go.mod