added http code 526 handling for intermittent https connectivity erro…

…rs to Exchange.php

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add .__doc__ string to all generated functions

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appveyor web3 deps

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exmo parseTransaction amount includes fee

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upbit fetchOrdersByState fix ccxt#4455

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Update livecoin.js

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gdax/coinbasepro market active flag fix ccxt#4440

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itbit sign() fix ccxt#3594

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bithumb fetchTickers fix ccxt#4443

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remove a blank line

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