Additional protections against exceeding rate limits.
Additional protections against exceeding rate limits.

Added getFollowerList
No longer wastes Twitter API calls on users that Flock knows to have no followers.

Users with <= 20 followers are now crawled using the followers/list endpoint. This helps "save" calls to the follower/ids endpoint for users which have many followers. Additionally, since this endpoint returns user objects instead of just their IDs, their user profiles are updated as well easing the burden on the user profile scanner.

Based on a sample of ~5M users, roughly 70% had <= 20 followers.