kraken fetch_ohlcv since parameter broken about ccxt

[carlosmiei]

@xmatthias You're right 🤦 , it seems to work because the since is not working on the API and the filtering is done on the exchange side.

Will try to fix the "off by 1" using the correct since scale.

[carlosmiei]

Hello @xmatthias, thanks for reporting it.

Weird, locally the "previous" version wasn't working at all on my end due to the scale of the timestamp, but I will re-test it and revert the logic if needed.

[xmatthias]

Weird, locally the "previous" version wasn't working at all on my end due to the scale of the timestamp, but I will re-test it and revert the logic if needed.

I'm not sure if fully reverting is correct, either- as the previous version does pull ALL data (all 720 candles) - with the filtering then happening locally.
It might be a case of "since - 1x timeframe" that's necessary - but i'll have a look at the linked version