#update to 1.7.5

[yutiansut]

1. 更新了代码输出
2. 当你传入了一个不规范的QAAcoount的时候, 增加了QAPerformance的兼容性

[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/QAARP/QARisk.py:

Line 76:80: E501 line too long (81 > 79 characters)
Line 1038:33: E128 continuation line under-indented for visual indent
Line 1039:33: E128 continuation line under-indented for visual indent
Line 1040:33: E128 continuation line under-indented for visual indent
Line 1045:33: E128 continuation line under-indented for visual indent
Line 1046:33: E128 continuation line under-indented for visual indent
Line 1047:33: E128 continuation line under-indented for visual indent
Line 1052:80: E501 line too long (83 > 79 characters)
Line 1054:25: E741 ambiguous variable name 'l'
Line 1210:33: E128 continuation line under-indented for visual indent
Line 1211:33: E128 continuation line under-indented for visual indent
Line 1212:33: E128 continuation line under-indented for visual indent
Line 1217:33: E128 continuation line under-indented for visual indent
Line 1218:33: E128 continuation line under-indented for visual indent
Line 1219:33: E128 continuation line under-indented for visual indent
Line 1224:80: E501 line too long (83 > 79 characters)
Line 1226:25: E741 ambiguous variable name 'l'

• In the file QUANTAXIS/QAIndicator/talib_indicators.py:

Line 31:5: E265 block comment should start with '# '

• In the file QUANTAXIS/QAIndicator/talib_series.py:

Line 30:5: E265 block comment should start with '# '