strategy:turtle: exhance functionality to print profit

Exhance functionality to print profit.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
strategy:turt1: fix the issue cutting losses

Fix a issue that could not cut losses accurately.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
test:turt1: update tests

Update tests.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>