The only functional change is the switch from datetime.now() to datetime.utcnow(), since we declare the value to be in UTC time zone later by appending the 'Z' to the isoformat string.
Due to a massive storm of spam, registration on this instance now requires explicit administrator approval. Sorry for the added friction, we're also looking into automatic filtering options.
The only functional change is the switch from datetime.now() to datetime.utcnow(), since we declare the value to be in UTC time zone later by appending the 'Z' to the isoformat string.