card-pdf-service 0.1.0 (convention-card 0.29.0)

POST /pdf?template=classic|new with a convention card as JSON: its
card_data, or a record { name, card_data } as the editor at
https://bridge-craftwork.com/card/ exports. The answer is the filled-in ACBL
card as a PDF. Nothing is stored.

Limits: 256 KB a card, 30 cards a minute.