Fix incorrect argument handling.
Set user agent and add note for the reason.
Adjust template.
Adjust debug output.
Remove category adjustment because category is not extracted now.
Detect sign-in in the more robust way.
Only show the number of items.
Check DateTime validity.
Adjust date format according to the latest representation.
Check URL validity.
Remove hard-coded domain.
Add support for domain dependent datetime format.
Update TODO comments.