ECharts 2.2.1 发布了，Charts开源来自百度商业前端数据可视化团队，基于html5
Canvas，是一个纯Javascript图表库，提供直观，生动，可交互，可个性化定制的数据可视化图表。创新的拖拽重计算、数据视图、值域漫游等特
性大大增强了用户体验，赋予了用户对数据进行挖掘、整合的能力。 
下载地址：https://github.com/ecomfe/echarts/archive/2.2.1.zip 该版本改进内容包括： 【^】 [markLine] Optimize curve drawing. smoothRadian changed to smoothness 【^】 [markLine] Support large option as large scale mark line optimization hint. See example map22 【^】 [markLine] Support edge bundling, bundling，See example map22 【^】 dataView Custom config enhancement, See #1316 » [^] [eventRiver] eventList changed to data. [^] [force] Optimize for two-way link，support #1344 » [#] [funnel] Fix min/max size bug. [-] [gauge] Remove precision option [^] symbol Optimization for color configuration [#] Fix dataZoom error when yAxis and xAxis switched. Fix #1320 » [^] [k] Support label configuration [#] [force] Fix layout error when change data frequently when worker enabled. Fix #1319 » [#] [bar] Fix label disappear bug when label position is 'insideTop'.Fix #1257 » [#] noDataLoadingOption not working bug fixed。Fix #1269 » [^] Polar label support formatter [^] Radar add max, min option [^] tooltip add enterable option [?] Dependence，ZRender 2.0.8+
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