Add some tests for RSS.
Add RSS content service
Merge branch '1127_pull_bot' of github.com:TID-Lab/aggie into 1010_rss_content_service
Make fetch() callback-based
Merge branch 'develop' of github.com:TID-Lab/aggie into 1010_rss_content_service
Add error handling, avoid dupes, tests.
Bots can manipulate sources; refactor RSS content service.
Fix merge conflicts.
Merge branch 'develop' of github.com:TID-Lab/aggie into 1010_rss_content_service
Better error handling.
Merge branch '1010_rss_content_service' into develop