[Add] 增加VtTickData的静态初始化函数 [Fix] 修复一个潜在BUG：仅仅载入vtObject.py并初始化VtLogData时有可能提示INFO字段不存在
[Add] 增加VtTickData的静态初始化函数
[Fix] 修复一个潜在BUG：仅仅载入vtObject.py并初始化VtLogData时有可能提示INFO字段不存在

bigdig/vnpy,msincenselee/vnpy,bigdig/vnpy,andrewchenshx/vnpy,vnpy/vnpy,andrewchenshx/vnpy,vnpy/vnpy,andrewchenshx/vnpy,bigdig/vnpy,msincenselee/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,bigdig/vnpy