docs: update change log

CHANGELOG.md

@@ -3,19 +3,31 @@
 ---
 
 #### 2.2.1
+
+`2018-11-25`
+
 * fix: Compatible with MOUSEWHEEL
 * fix: fadeIn aniamtion
 * fix: fix wheelZoom behaviour by removing the deprecated mousewheel event
 
 #### 2.2.0
+
+`2018-11-22`
+
 * fix: Graph read zIndex 
 * refactor: Animation
 
 #### 2.1.5
+
+`2018-10-26`
+
 * fix: svg pixelRatio bug
 * feat: add wheel event
 
 #### 2.1.4
+
+`2018-10-06`
+
 * fix: custom math.sign to compatible with ie browser.Closes #516.
 * fix: legend component from @antv/component
 * feat: update svg minimap && fix svg dom event
@@ -58,7 +70,7 @@
 
 `2018-07-12`
 
-improve: add g6 arrow
+* improve: add g6 arrow
 
 #### 2.0.4
 
@@ -92,7 +104,7 @@ improve: add g6 arrow
 * fix(saveImage) saveImage bug
 * fix(event): fix dom coord. Closes #305
 
-## v2.0.1
+#### 2.0.1
 
 `2018-06-11`
 
@@ -102,299 +114,301 @@ improve: add g6 arrow
 * chore:    .travis.yml add add Node.js
 * chore:    .travis.yml cache node_modules
 
-## v2.0.0
+#### 2.0.0
 
 `2018-06-06`
 
-* refactor: 重构架构 && 代码
+* refactor: refactor architecture && code
 
-## v1.2.1
+#### 1.2.1
 
 `2018-03-15`
 
-* feat:     新增 layout 接口
+* feat:    layout interface
 
-## v1.2.0
+#### 1.2.0
 
 `2018-01-15`
 
-* fix:      修复 nodeActivedBoxStyle 拼写错误
-* fix:      修复 删除环时报错
-* fix:      修复 右键后再移动鼠标触发 dragstart
-* feat:     新增 统一布局机制到 Graph
-* feat:     新增 插件机制
-* feat:     新增 数据过滤机制
-* feat:     新增 激活态接口
-* feat:     新增 行为 wheelZoomAutoLabel
-* feat:     新增 graph 配置项 preciseAnchor
-* remove:   移除 Global.preciseAnchor
-* remove:   移除 Layout.Flow、Layout.Force
-* improve:  改进 html 容器策略
+* fix:      nodeActivedBoxStyle spelling error
+* fix:      error when deleting a circle
+* fix:      trigger dragstart while right clicking and moveing
+* feat:    Unify Layout mechanism
+* feat:    Plugin mechanism
+* feat:    Data filter mechanism
+* feat:    Activated interface
+* feat:    Action wheelZoomAutoLabel
+* feat:    configuration of graph -- preciseAnchor
+* remove:   Global.preciseAnchor
+* remove:   Layout.Flow、Layout.Force
+* improve:  html container strategy
 
-## v1.1.6
+#### 1.1.6
 
 `2017-10-15`
 
-* fix:      修复 布局算法包中的打包问题
+* fix:      pack problem in layout algorithm
 
-## v1.1.5
+#### 1.1.5
 
 `2017-09-15`
 
-* fix:      修复 dragCanvas 在 mousemove 才设置拾取实效，否则会影响点击事件
-* fix:      修复 将 node 的 activeRectBox 的拾取设置为false
+* fix:      dragCanvas is effective while mousemove, prevent it from affecting click events
+* fix:      unactivate pick-up in activeRectBox of node
 
-## v1.1.4
+#### 1.1.4
 
 `2017-08-15`
 
-* feat:     新增 graph.invertPoint() 转置点
-* feat:     新增 锚点第三个配置参数 此后锚点支持设置样式、悬浮样式、是否可以连接
-* feat:     新增 item.getGroup()
-* feat:     新增 事件 afteritemrender、itemremove、itemadd
-* feat:     新增 行为信号量 behaviourSignal
-* improve:  改进 画布聚焦时 mouseWheel 才生效
+* feat:     graph.invertPoint()
+* feat:     third configuration of anchor to support style setting, float style, connection
+* feat:     item.getGroup()
+* feat:     events -- afteritemrender、itemremove、itemadd
+* feat:     behaviourSignal
+* improve:  mouseWheel is affective after focusing the canvas
 
-## v1.1.3
+#### 1.1.3
 
 `2017-08-8`
 
-* feat:     新增 Graph 配置项 useNodeSortGroup，用于配置节点组是否使用排序组
-* feat:     新增 Global.nodeDelegationStyle, Global.edgeDelegationStyle 边和节点可独立配置委托图形
-* fix:      修复 事件 itemremove 销毁前触发
+* feat:     Graph configuration -- useNodeSortGroup
+* feat:     Global.nodeDelegationStyle, Global.edgeDelegationStyle, isolate the delegation of edge and node on graph
+* fix:      itemremove is triggered before destroying a graph
 
-## v1.1.2
+#### 1.1.2
 
 `2017-08-01`
 
-* feat:     新增 行为 dragBlankX dragBlankY
+* feat:     dragBlankX dragBlankY
+
+#### 1.1.1
 
-## v1.1.1
 `2017-07-18`
 
-* improve:  改进 添加 dragNode 保护机制
+* improve:  dragNode protect mechanism
 
-## v1.1.0
+#### 1.1.0
 
 `2017-07-05`
 
-* feat:     新增 HTML 节点
-* feat:     新增 映射支持直接传入 callback
-* feat:     新增 Graph 接口 updateMatrix、changeSize、showAnchor、hideAnchor、updataNodesPosition
-* feat:     新增 工具方法 Util.isNode()、Util.isEdge()
-* feat:     新增 Shape polyLineFlow
-* feat:     新增 行为 dragEdgeEndHideAnchor、dragNodeEndHideAnchor、hoverAnchorSetActived、hoverNodeShowAnchor
+* feat:     HTML node
+* feat:     mapper support callback function
+* feat:     Graph interfaces -- updateMatrix、changeSize、showAnchor、hideAnchor、updataNodesPosition
+* feat:     tool functions -- Util.isNode()、Util.isEdge()
+* feat:     Shape polyLineFlow
+* feat:     dragEdgeEndHideAnchor、dragNodeEndHideAnchor、hoverAnchorSetActived、hoverNodeShowAnchor
 
-## v1.0.7
+#### 1.0.7
 
 `2017-06-21`
 
-* fix:      修复 第一次 draw 时 16ms 内多画一下
-* improve:  改进 edit 模式下怎家滚轮缩放限制
+* fix:       draw one more time in 16ms after first draw
+* improve:  add zoom by scroll in edit mode
 
-## v1.0.6
+#### 1.0.6
 
 `2017-06-15`
 
-* fix:      修复 兼容部分 机型 window 下 chrome 首次点击出发 mousemove 导致click事件不正确
-* feat:     新增 支持尺寸不变图形
-* feat:     新增 analysis 分析模式
-* feat:     新增 updateNodesPositon 批量更新节点位置方法
-* improve:  改进 useAnchor 改为 边 edge 的配置项
+* fix:      compatible in chrome in windows. triggering mousemove after first click leads to wrong click event. 
+* feat:     support fix size graphics
+* feat:     analysis mode
+* feat:     updateNodesPositon update a set of nodes' position
+* improve:  change useAnchor to be a configuration of edge
 
-## v1.0.5
+#### 1.0.5
 
 `2017-06-01`
 
-* feat:     新增 downloadImage 支持传入保存的文件名
-* feat:     新增 tooltip 边距自动检测
-* improve:  改进 拖拽移出画布时拖拽行为中止
+* feat:     downloadImage support saving with name
+* feat:     automatically detect tooltip padding
+* improve:  stop the action while mouse dragging out of the canvas
 
-## v1.0.4
+#### 1.0.4
 
 `2017-05-20`
 
-* fix:      修复 tree changeData Bug
-* fix:      修复 getAnchorPoints 返回 auto 时锚点取直线与包围盒的截取点
-* fix:      修复 node label 无法生成的判定条件为 isNull
-* feat:     新增 增加视口参数 tl、tc、tr、rc、br、bc、bl、lc、cc
-* improve:  改进 减小 tolerance 数值，以提高线段截取精准度
-* improve:  改进 tooltip 事件机制，提升性能
+* fix:      tree changeData Bug
+* fix:      when getAnchorPoints returns auto, anchor is the intersection of edge and the bounding box
+* fix:      generate node label according to isNull
+* feat:     viewport parameters -- tl、tc、tr、rc、br、bc、bl、lc、cc
+* improve:  reduce tolerance to improve the accuracy of interception
+* improve:  improve tooltip event mechanisom to enhance performance
 
-## v1.0.3
+#### 1.0.3
 
 `2017-05-10`
 
-* feat:     新增 graph.guide().link() 添加 link 辅助元素
+* feat:     graph.guide().link()
 
-## v1.0.2
+#### 1.0.2
 
 `2017-05-10`
 
-* fix:      修复 Object.values => Util.getObjectValues
-* fix:      修复 anchorPoints 为 auto 时，edge上就算传了anchorpoint，也返回截取点
-* fix:      修复 tree 更新接口 Bug
-* improve:  改进 位置信息用 group.transfrom() 来表示
+* fix:      Object.values => Util.getObjectValues
+* fix:      when anchorPoints is auto, there is only anchorpoint on edge, it will also return the intersection
+* fix:      tree update interface Bug
+* improve:  represent positions information by group.transfrom()
 
-## v1.0.1
+#### 1.0.1
 
 `2017-04-22`
 
-* fix:      修复 复制、粘贴 bug
-* feat:     新增 控制 16s 内只 draw 一次
-* feat:     新增 事件 itemactived itemunactived itemhover itemupdate itemmouseenter itemmouseleave
-* improve:  改进 框选行为激活图形前，应清楚之前图形的激活
-* improve:  改进 dragAddEdge 行为，可链接到锚点
-* improve:  改进 优化动画性能
+* fix:      copy and paste bug
+* feat:    draw once in 16ms
+* feat:     itemactived itemunactived itemhover itemupdate itemmouseenter itemmouseleave
+* improve: be clear the status of graphics before activating graphics by frame selection
+* improve:  dragAddEdge, linkable to anchor
+* improve:  performance of animation
 
-## v1.0.0
+#### 1.0.0
 
 `2017-03-31`
 
-* feat:     新增 fitView 视口配置项
-* feat:     新增 graph.zoom() 缩放接口
-* feat:     新增 wheelZoomHideEdges 滚轮缩放边隐藏行为
-* feat:     新增 dragHideEdges 拖动边隐藏行为
-* feat:     新增 graph.filterBehaviour() 过滤行为接口
-* feat:     新增 graph.addBehaviour() 增加行为接口
-* feat:     新增 graph.changeLayout() 更改布局
-* feat:     新增 read 读接口，重定义 save 保存接口
-* feat:     新增 graph.snapshot 快照功能 graph.downloadImage 导出图片功能
-* feat:     新增 graph.autoSize() 自动缩放画布尺寸
-* feat:     新增 graph.focusPoint() 聚焦某点
-* feat:     新增 tree 树图、net 网图
-* feat:     新增 交互机制 事件 => 行为 => 模式
-* feat:     新增 动画机制
-* feat:     新增 itemmouseleave、itemmouseenter 事件
-* remove:   去除 graph.refresh()
-* remove:   去除 graph.changeNodes()
-* remove:   去除 graph属性 zoomable、dragable、resizeable、selectable
-* improve:  改进 锚点机制，更快、更强
-* improve:  改进 不再抛出 G6.GraphUtil 方法，全部统一成 G6.Util
-* improve:  改进 替换 g-canvas-core => g-canvas 性能提升
-* improve:  改进 移除 Global.nodeBoxStyle 改用 Global.nodeAcitveBoxStyle
-* improve:  改进 小写事件名 afterAdd => afteradd
-* improve:  改进 G6.Graph 沉为抽象类
+* feat:     fitView configurations
+* feat:     graph.zoom()
+* feat:     wheelZoomHideEdges hide the edges while zooming by wheel
+* feat:     dragHideEdges hide the edge while dragging edge
+* feat:     graph.filterBehaviour()
+* feat:     graph.addBehaviour()
+* feat:     graph.changeLayout()
+* feat:     read interface, re-define save interface
+* feat:     graph.snapshot, graph.downloadImage
+* feat:     graph.autoSize()
+* feat:     graph.focusPoint()
+* feat:     tree graph、net graph
+* feat:     interaction mechanism -- event => action => mode
+* feat:     animation mechanism
+* feat:     itemmouseleave、itemmouseenter
+* remove:   graph.refresh()
+* remove:   graph.changeNodes()
+* remove:   graph attributes -- zoomable、dragable、resizeable、selectable
+* improve:  anchor mechanism
+* improve:  hide G6.GraphUtil functions, unified in G6.Util
+* improve:  replace g-canvas-core to g-canvas to improve performance
+* improve:  Global.nodeAcitveBoxStyle instead of Global.nodeBoxStyle
+* improve:  afterAdd => afteradd
+* improve:  G6.Graph to be an abstract class
 
-## v0.2.3
+#### 0.2.3
 
 `2017-03-2`
 
-* fix:      修复 dragable 可用于控制默认模式下是否可拖动画布
-* feat:     新增 graph.converPoint() 反置点方法
-* feat:     新增 graph.autoSize()
-* feat:     新增 rightmousedown leftmousedown wheeldown 事件
-* improve:  改进 用tyr catch 防御getPoint由于path长度为零出错
+* fix:      dragable for controlling dragable under default mode
+* feat:     graph.converPoint()
+* feat:     graph.autoSize()
+* feat:     rightmousedown leftmousedown wheeldown
+* improve: use try catch to prevent the length of getPoint of path equals zero
 
-## v0.2.2
+#### 0.2.2
 
 `2017-02-24`
 
-* fix:      修复 tooltip css padding 加px
-* fix:      修复 tooltip 单子段映射错误
-* fix:      修复 精确截取点错误
-* fix:      修复 双精屏下缩放点错误
-* fix:      修复 包围盒应该 apply keyShape 父元素
-* feat:     新增 afterAdd 事件
-* feat:     新增 dblclick 事件
-* improve:  改进 width、height 默认null
-* improve:  改进 节点不再使用hovershape
-* improve:  改进 tooltip 增加防御机制
+* fix:      add px totooltip css padding
+* fix:      tooltip mapping error
+* fix:      accurate intersection
+* fix:      zoom error on double accuracy screen
+* fix:      buonding box extended from keyShape
+* feat:     afterAdd 
+* feat:     dblclick
+* improve:   width、height default null
+* improve:  remove hovershape on node
+* improve:  tooltip defense mechanism
 
-## v0.2.1
+#### 0.2.1
 
 `2017-02-14`
 
-* fix:      新增 添加节点时增加rollback
-* fix:      新增 计算包围盒apply父容器变换
-* feat:     新增 waterPath 水波路径算法
-* feat:     新增 tooltip 提示信息
-* feat:     新增 mouseover 事件
-* feat:     新增 multiSelectable 配置项，默认关闭，关闭时选择模式开启空白处拖动功能
-* feat:     新增 width 没设置时自动forceFit 为 true
-* improve:  改进 zoomable、dragable、resizeable、selectable 默认为 true
+* fix:      rollback when add node
+* fix:      apply tranformation of parent container while calculating bounding box
+* feat:     waterPath
+* feat:     tooltip tip information
+* feat:     mouseover 
+* feat:     multiSelectable, default false
+* feat:     set forceFit to true while width is undefined
+* improve:  zoomable、dragable、resizeable、selectable default true
 
-## v0.2.0
+#### 0.2.0
 
 `2017-02-07`
 
-* feat:     新增 精确逼近锚点机制
-* feat:     新增 GraphUtil.getEllipsePath 点集到椭圆Path
-* feat:     新增 GraphUtil.pointsToPolygon 点集到多边形Path
-* feat:     新增 GraphUtil.pointsToBezier 点集到贝塞尔曲线Path
-* feat:     新增 GraphUtil.snapPreciseAnchor 获取精准锚点方法
-* feat:     新增 GraphUtil.arrowTo  箭头旋转方法
-* feat:     新增 GraphUtil.drawEdge 画边方法
-* feat:     新增 bezierQuadratic 二阶贝塞尔曲线
-* feat:     新增 node.show 显示节点
-* feat:     新增 node.hide 隐藏节点
-* feat:     新增 node.getLinkNodes 获取相连的节点
-* feat:     新增 node.getUnLinkNodes 获取不相连的节点
-* feat:     新增 node.getRelativeItems 获取相关的子项
-* feat:     新增 node.getUnRelativeItems 获取不相关的子项
-* feat:     新增 edge.show 显示边
-* feat:     新增 edge.hide 隐藏边
-* feat:     新增 Shape afterDraw 接口
-* improve:  改进 改进贝塞尔曲线控制点位置
-* improve:  改进 grpah.delete => graph.del
-* improve:  改进 添加 id 重复抛出异常
+* feat:     accurate anchor mechanism
+* feat:     GraphUtil.getEllipsePath
+* feat:     GraphUtil.pointsToPolygon
+* feat:     GraphUtil.pointsToBezier
+* feat:     GraphUtil.snapPreciseAnchor
+* feat:     GraphUtil.arrowTo
+* feat:     GraphUtil.drawEdge
+* feat:     bezierQuadratic
+* feat:     node.show
+* feat:     node.hide
+* feat:     node.getLinkNodes
+* feat:     node.getUnLinkNodes
+* feat:     node.getRelativeItems
+* feat:     node.getUnRelativeItems
+* feat:     edge.show
+* feat:     edge.hide
+* feat:     Shape afterDraw
+* improve:  the controlling point positions of Bezier Curve改进贝塞尔曲线控制点位置
+* improve:  grpah.delete => graph.del
+* improve:  error when adding id
 
-## v0.1.4
+#### 0.1.4
 
 `2017-01-17`
 
-* fix:      修复 拖动节点时委托中心应是bbox中心
-* fix:      修复 所有排序算法采用基数排序，保持层级稳定
-* fix:      修复 边的id自动生成机制才用随机数
-* feat:     新增 边支持层级排序，边文本会排在最上层
-* feat:     新增 注册边时，如果不指定继承形，则尝试从注册形获取继承形
+* fix:      delegator of dragging a node is the center of bbox
+* fix:      use cardinality sort for all the sorting algorithm
+* fix:      random id on edges
+* feat:     level sort on edges, edge labels on the top level
+* feat:     while extending shape is undefined when register an edge, find the extending shaoe automatically
 
-## v0.1.3
+#### 0.1.3
 
 `2017-01-15`
 
-* fix:      修复 所有assistGrid在进行操作时，判断该对象是否存在
-* feat:     新增 rollback 增加判断，默认不开启回退机制
-* feat:     新增 新增style 映射通道
-* feat:     新增 getAnchorPoints 不存在 或者 返回为假时 取线段交点
-* feat:     新增 新增边水平曲线bezierHorizontal、竖直曲线bezierVertical
-* improve:  改进 默认交互行为结束后触发 'eventEnd' 事件
+* fix:      judge the existance of the object while operating assistGrid
+* feat:     rollback judgement, default unactivate
+* feat:     style mapping channel
+* feat:     return the intersections while getAnchorPoints is null or returns false
+* feat:     bezierHorizontal、bezierVertical
+* improve:   'eventEnd' 
 
-## v0.1.2
+#### 0.1.2
 
 `2017-01-12`
 
-* fix:      修复 更新网格时需要判定配置项grid
-* fix:      修复 graphContainer 不设置自己的宽高 由内部canvas撑大
-* fix:      修复 添加edges时若无target或source则不添加edge
-* fix:      修复 changeSize() 设置最大限容错
-* feat:     新增 graph.get('el') 获取最上层canvas DOM
-* feat:     新增 事件抛出当前shape
+* fix:      judge the configuration before updating grid
+* fix:      the size of graphContainer in unsetable, setted by inner canvas
+* fix:      will not add an edge if the target or source is undefined
+* fix:      changeSize() maximum tolerance for error
+* feat:     graph.get('el')  to get canvas DOM
+* feat:     event exposures shape
 
-## v0.1.1
+#### 0.1.1
 
 `2017-01-09`
 
-* feat:     新增 graph 的入口为 G6.Graph
+* feat:     entrance of graph is G6.Graph
 
-## v0.1.0
+#### 0.1.0
 
 `2017-01-07`
 
-* feat:     新增 抛出颜色计算库
-* feat:     新增 添加快捷键操作
-* feat:     新增 updo、redo
-* feat:     新增 复制、粘贴
-* feat:     新增 重置缩放、自动缩放
-* feat:     新增 树图、线性图、桑基图、流图布局
-* feat:     新增 业务流程图封装
-* feat:     新增 时序图封装
-* feat:     新增 鼠标交互：单选、框选
-* feat:     新增 鼠标交互：节点变形
-* feat:     新增 鼠标交互：边变形
-* feat:     新增 鼠标交互：节点、边拖拽交互
-* feat:     新增 鼠标交互：边链接到锚点
-* feat:     新增 鼠标交互：画布拖拽
-* feat:     新增 鼠标交互：画布缩放
-* feat:     新增 添加模式选择
-* feat:     新增 集成 g-graph
+* feat:     color calculation library
+* feat:     hot key
+* feat:     updo, redo
+* feat:     copy, paste
+* feat:     reset zoom, auto zoom
+* feat:     tree graph, linear graph, sankey graph, flow laout
+* feat:     flow chart package
+* feat:     timing diagram package
+* feat:     single selection, frame selection
+* feat:     node deformation
+* feat:     edge deformation
+* feat:     drag node and edge
+* feat:     link edge and node
+* feat:     drag canvas
+* feat:     zoom
+* feat:     select mode
+* feat:     integrate g-graph
+