tooltip优化指示样式，encode bug fix
why echarts更新
Change config names in chord
Merge branch 'master' of https://github.com/ecomfe/echarts
Legend support in chord
Add chord config : clockWise, startAngle
Chord : innerRadius, outerRadius to radius array
K线图阴阳颜色bug fix
symbol 支持 arrow
Chord : stroke width fix, multi series support
Chord : scale text align
Chord : bug fix in legend selecting
Chord : filter empty data, change example data
Chord example : update data
Chord : add label
Chord : filter empty data
Chord : add example d3
legend 多维分行控制
Chord : filter by serie selection in legend
Chord : fix strokeFix calculate problem, fix ie center calculate