修复stock.get_quote_history无法获取数据或数据异常 #134
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在 http://35.push2his.eastmoney.com/api/qt/stock/kline/get?secid=1.600900&fields1=f1%2Cf2%2Cf3%2Cf4%2Cf5%2Cf6&fields2=f51%2Cf52%2Cf53%2Cf54%2Cf55%2Cf56%2Cf57%2Cf58%2Cf59%2Cf60%2Cf61&klt=30&fqt=1&end=20500101&lmt=100 中， 设定lmt=500时，只能获取有限数据（大约是250条左右）。不是说不能获取到数据，而是获取的数据条数过少，导致无法进行使用。 |
原因见：#132 (comment) |
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修复 #130 这个 issue
原因：
当 低于 klt 低于 101 的时候，如 60,30 分钟线，触发的是以下 get 请求
http://35.push2his.eastmoney.com/api/qt/stock/kline/get?secid=1.600900&fields1=f1%2Cf2%2Cf3%2Cf4%2Cf5%2Cf6&fields2=f51%2Cf52%2Cf53%2Cf54%2Cf55%2Cf56%2Cf57%2Cf58%2Cf59%2Cf60%2Cf61&klt=30&fqt=1&end=20500101&lmt=100
根据 url 分析，东方财富要求有个 lmt 参数（limit），同时 beg 和 end 参数不可自选，end 只能取默认最大值 20500101，通过改变 lmt 可以更改近几日的分钟线。目前 lmt 默认是 100
测试 30 分钟线
df = ef.stock.get_quote_history("600900", beg="20200101", end="20230101", klt=30, fqt=1,lmt=100)
可返回结果：
新增:
ef.stock.get_quote_history 可以传入 lmt 值来控制返回的数量