[bitbay] fix fees on my trades

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BitBay fetchTrades rewrite

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Okex3: Add BadSymbol exception

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Set has.fetchTime when fetchTime() exists.

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bitz trailing space cleanup

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Add more transpile funcs

While looking at the Python implementations for these,
I got confused because these functions aren't transpiled. Feel free to
disregard it, but it can make things clearer.

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[bitlish] fees update

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iso8601(): don't convert number to a string just to parse it again.

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1.18.1217

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Update yobit.js

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