Imports
- github.com/PuerkitoBio/goquery
- github.com/Sirupsen/logrus
- github.com/alphagov/govuk_crawler_worker/http_crawler
- github.com/alphagov/govuk_crawler_worker/queue
- github.com/alphagov/govuk_crawler_worker/ttl_hash_set
- github.com/alphagov/govuk_crawler_worker/util
- github.com/streadway/amqp