1.10.529

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bithumb typo capitalise → capitalize in createOrder fix ccxt#1012

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minor edits to CONTRIBUTING.md fix ccxt#1006

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kucoin fetchBalance propert free/user/total values fix ccxt#1009

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added .fetchImplementation hook to Exchange.js fix ccxt#976

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minor formatting edits to btcmarkets ccxt#1008

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added undefined default credentials to Exchange.js

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formatting edits to btcmarkets ccxt#1007

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cleanup in transpile.js

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1.10.520

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