0.2.2

Add support to capture multiple urls at once.

0.2.0

This release contains several breaking changes:
- renamed functions id --> token
- renamed ArchiveClient.submit_id --> ArchiveClient.submit_token
- removed the Options from the futures' Item type, values are now returned directly.
- Introduced specifc Error type that replaces the hyper::Error as Error Type of the futures.

Examples were also updated.