Sigma.js 1.1.0 发布，JavaScript 绘图库

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　　Sigma.js 1.1.0 发布了，Sigma.js 是一个开源的轻量级 JS 库，用来绘制各种图形，使用的是 HTML Canvas 元素。

　　该版本改进内容包括：

• 　　Added the SVG renderer.
  
• 　　Added the minArrowSize setting (thanks to @ssidorchick).
  
• 　　Added an edge quadtree and support for edge events (thanks to @sheymann).
  
• 
  　　Fixed #362: Nodes and edges can now have a number>
  
• 　　Added the renderers.snapshot plugin.
  
• 　　Fixed #403: renderer string container polymorphism.
  
• 　　Added an event dispatched when instance is killed.
  
• 　　Added low-level Barnes-Hut optimization to the layout.forceAltas2 plugin (thanks to @jacomyma).
  
• 　　Added the mouseWheelEnabled setting.
  
• 　　Added an option to skip quadtree indexation when refreshing an instance.
  
• 　　Added defaultEdgeType and defaultNodeType settings.
  
• 　　Added a isDragging flag in click event.
  
• 　　Added some features to the layout.forceAltas2 plugin.
  
• 
  　　Fixed resizing>
  
• 　　Added the SVG exporter plugin.
  
• 　　Fixed some SVG-related bugs (thanks to @qinfchen).
  
• 　　Added the A* plugin (thanks to @A----).
  
• 　　Changed the singleHover setting to default to true.
  
• 　　Added the cypher plugin (thanks to @sim51).
  
• 　　Added the parallel edges plugin (thanks to @3ch01c).
  
• 　　Added HDPI screens support (thanks to @mdamien).
  
• 　　Fixed a ForceAtlas2 bug>ajustSizes setting (thanks to @rangeonnicolas).
  
• 　　Improved sigma.webgl.nodes.fast implementaton.
  
• 　　Added some>sigma.webgl.edges.def.
  
• 　　Various optimizations.