Pixiu

**Descriptions：**
1.Add support multiple test names:
pixiu -c pixiu.json -n testAUDUSD_TP_Demo1 testGBPUSD_TP_Demo1 testNZDUSD_TP_Demo1 testEURUSD_TP_Demo1 testUSDCHF_TP_Demo1 testUSDJPY_TP_Demo1 testUSDCAD_TP_Demo1 ...


[2021-10-19]
Version:
Package:

**Descriptions：**
1.ea_tester.py:
1) Fix report total_net_profit_rate error.
2.pxtester.py:
1) parse_test_config: Add custom account

[2021-10-18]
Version:
Package:

**Descriptions：**
1.ea_tester.py:
1) Fix modify_order bug, if take_profit or stop_loss is None

[2021-10-16]
Version:
Package:

**Descriptions：**
1.pxtester.py:
1) Report add win rate

[2021-10-15]
Version:
Package:

**Descriptions：**
1.pxtester.py:
1) Add argument: print_log_type = account|order|ea|report

[2021-10-14]
Version:
Package:

**Descriptions：**
1.ea_tester.py:
1) Fix bugs: __process_order__, close_all_orders call close_order error
2) Fix bugs: max_drawdown calculation
2.pxtester.py:
1) on_end_execute: report output format

[2021-08-25]
Version:
Package: