Support export.
Make data_type available to non-any receivers.
Fixed scope assignment.
Pass initial_scope.
Added Download wrapper.
Imported most important stuff into base module.
Added --pdb switch.
Suppport post-processing.
Added exceptions.
Abort on critical errors.
Do not gevent-monkey patch thread, not needed, causes ugly errors on program exit.
Whitespace fix.
Omit first datestamp in stderr log.
Job class.
Added two ticket generator implementations.
Dropped inefficient TicketGenerator.
Removed debugging cruft.
Return f after decoration.
Use new rate limiting.
Save scraper_name in job.