add more require paramters to dydx perpetual tickers.

coingecko / cryptoexchange

[UNMAINTAINED] Ruby library to query market data from cryptocurrency exchanges (https://www.coingecko.com)

https://www.coingecko.com

MIT License

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Closed teekenl closed 4 years ago

teekenl commented 4 years ago

What is the purpose of this Pull Request? Add more/missing required parameters to the perpetual tickers.
What is the related issue for this Pull Request (if this PR fixes issue, prepend with "Fixes" or "Closes")?
[x] I have added Specs