update to 1.10.6

[yutiansut]

1. 合并胡琛代码
2. 升级深圳的融券获取的代码， 新增QA_fetch_get_margin_all接口

[pep8speaks]

Hello @yutiansut! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file QUANTAXIS/QAFetch/QACrawler.py:

Line 33:80: E501 line too long (146 > 79 characters)
Line 44:46: W291 trailing whitespace
Line 54:45: E127 continuation line over-indented for visual indent
Line 54:80: E501 line too long (90 > 79 characters)
Line 54:91: W291 trailing whitespace
Line 55:1: W293 blank line contains whitespace
Line 70:80: E501 line too long (100 > 79 characters)
Line 71:1: W293 blank line contains whitespace
Line 79:54: E231 missing whitespace after ','
Line 80:21: E225 missing whitespace around operator
Line 80:29: E231 missing whitespace after ','
Line 80:36: E231 missing whitespace after ','
Line 80:55: E231 missing whitespace after ','
Line 80:75: E231 missing whitespace after ','
Line 80:80: E501 line too long (148 > 79 characters)
Line 80:89: E231 missing whitespace after ','
Line 80:103: E231 missing whitespace after ','
Line 80:120: E231 missing whitespace after ','
Line 80:135: E231 missing whitespace after ','
Line 80:142: E231 missing whitespace after ','
Line 85:1: E302 expected 2 blank lines, found 0
Line 86:80: E501 line too long (88 > 79 characters)