ucharts折线图在series设置style为曲线curve无效，其他属性如lineType有效果

"series": [{
"name": "成交量A",
"data": [35, 8, 25, 37, 4, 20],
"style": 'curve'

    }, {  
      "name": "成交量B",  
      "data": [70, 40, 65, 100, 44, 68],  
      "lineType": 'dash',  
      "style": 'curve'  
    }, {  
      "name": "成交量C",  
      "data": [100, 80, 95, 150, 112, 132],  
      "style": 'straight'  
    }]