Feature: Add mock testing to ZB (#569)

* Adds mock testing to ZB

* STEALS improved time validation code from the original STOLEN validation code :D

* Mini fixes from review

* happy fun comment stealing

* Moves the loop checker earlier to ensure no double appendages

* Fixes sneaky test

* Fixes the important part where mock tests work instead of live tests

* Skips authenticated endpoints for mock testing.

* lint

* Updates candle wrapper functions to respect design

* basic linting fix

* Reverts configtest.json, updates readme to be way better, adds coverage to validateCandlesRequest

* Tiniest grammatical fix

* Fixes more outdated code references

* Closing out a high

* Fixes spacing

* Replaces all instances of 4 spaces in tmpl files with a tab

* fixes spacing and tab related readme issues once and for all 🤞

* tidy

* indentation violation identification situation

exchanges/binance/binance_wrapper.go

@@ -817,7 +817,7 @@ func (b *Binance) GetHistoricCandles(pair currency.Pair, a asset.Item, start, en
 		ret.Candles = append(ret.Candles, kline.Candle{
 			Time:   candles[x].OpenTime,
 			Open:   candles[x].Open,
-			High:   candles[x].Close,
+			High:   candles[x].High,
 			Low:    candles[x].Low,
 			Close:  candles[x].Close,
 			Volume: candles[x].Volume,
@@ -865,7 +865,7 @@ func (b *Binance) GetHistoricCandlesExtended(pair currency.Pair, a asset.Item, s
 			ret.Candles = append(ret.Candles, kline.Candle{
 				Time:   candles[i].OpenTime,
 				Open:   candles[i].Open,
-				High:   candles[i].Close,
+				High:   candles[i].High,
 				Low:    candles[i].Low,
 				Close:  candles[i].Close,
 				Volume: candles[i].Volume,