Add option to request 'additional data' on the getmarketcatalogue endpoint

[coush001]

the feature like getting start time on specific events/. runner name is available from the main betfair api

[lunswor]

@coush001 you can use the market_projection parameter to include these. Might also want to remove the screenshot as it's sharing a bit too much

[liampauling]

Feel free to join the slack (if you haven't) for questions like this