No Whitelist for URLs

The replay project has a whitelist for URLs. Some URLs aren't worth remembering (newrelic for instance, or google analytics).

EX: Replay.drop('newrelic.com', 'collector-252.newrelic.com','metadata.google.internal','169.254.169.254');//, 'collector-252.newrelic.com-443');

It would be highly desierable to implement a feature like that in this project. Without it far too much garbage ends up in the fixtures folder.