Imports golang.org/x/sync/semaphore golang.org/x/net/html github.com/go-shiori/dom golang.org/x/sync/errgroup github.com/sirupsen/logrus github.com/tdewolff/parse/v2 github.com/tdewolff/parse/v2/css github.com/pkg/errors Standard library imports bytes context crypto/tls encoding/base64 fmt io io/ioutil net/http net/url regexp strings sync time