Add experiment for metadata.
Small changes.
Change log level to INFO.
Fix default crypto setting.
Change log level to WARN.
Change to use infohash+roothash for metadata msg payload.
Add statistics for metadata message.
Small fix for statistics.
Fix start dispersy method.
Fix
Fix
Fix statistics.
Copy output data back even if process_guard exits with failure.
Log nr candidates per category
Bugfix
Bugfix
Switched to facetgrid for category
Fixed scale facet
Merge pull request #127 from NielsZeilemaker/walker_details

Walker details
Merge pull request #125 from LipuFei/metadata-experiment

Metadata experiment