默认白名单：增加排版相关的标签

lib/default.js

@@ -8,16 +8,32 @@
 // 默认白名单
 var whiteList = {
   a:      ['target', 'href', 'title'],
+  abbr:   ['title'],
+  address: [],
+  area:   ['shape', 'coords', 'href', 'alt'],
+  article: [],
+  aside:  [],
   audio:  ['autoplay', 'controls', 'loop', 'preload', 'src'],
   b:      [],
-  blockquote: [],
+  bdi:    ['dir'],
+  bdo:    ['dir'],
+  big:    [],
+  blockquote: ['cite'],
   br:     [],
+  caption: [],
+  center: [],
   cite:   [],
   code:   [],
+  col:    ['align', 'valign', 'span', 'width'],
+  colgroup: ['align', 'valign', 'span', 'width'],
+  dd:     [],
+  del:    ['datetime'],
+  details: ['open'],
   div:    [],
   dl:     [],
   dt:     [],
   em:     [],
+  font:   ['color', 'size', 'face'],
   footer: [],
   h1:     [],
   h2:     [],
@@ -29,19 +45,27 @@ var whiteList = {
   hr:     [],
   i:      [],
   img:    ['src', 'alt', 'title', 'width', 'height'],
+  ins:    ['datetime'],
   li:     [],
+  mark:   [],
+  nav:    [],
   ol:     [],
   p:      [],
   pre:    [],
+  s:      [],
   section:[],
+  small:  [],
   span:   [],
   strong: [],
-  table:  ['width', 'border'],
-  tbody:  [],
-  td:     ['width', 'colspan'],
-  th:     ['width', 'colspan'],
-  thead:  [],
-  tr:     ['rowspan'],
+  table:  ['width', 'border', 'align', 'valign'],
+  tbody:  ['align', 'valign'],
+  td:     ['width', 'colspan', 'align', 'valign'],
+  tfoot:  ['align', 'valign'],
+  th:     ['width', 'colspan', 'align', 'valign'],
+  thead:  ['align', 'valign'],
+  tr:     ['rowspan', 'align', 'valign'],
+  tt:     [],
+  u:      [],
   ul:     [],
   video:  ['autoplay', 'controls', 'loop', 'preload', 'src', 'height', 'width']
 };