[add] a new css class `.input-embeded` which has no border.
[fix] j3.Collection.loadData(null) will now clear the collection.
[add] options.contextData for j3.DataList.render
[add] j3.without(list, values|function)
[add] j3.startsWith() & j3.endsWith()
[add] j3.Path utilities
[fix] IE dosen't has a console object.
[fix] IE doesn't accept empty string for url when open an xhr
[add] j3.Uploader
[add] two string methods: j3.padLeft & j3.padRight
style changes
[bump] version to 0.3.15
[add] j3.sortBy() support `?` prefix, which means convert field value to boolean when sorting.
[enhance] show readable exception when caught on form submit
[enhanced] serialize options.data to options.url when j3.get()
[add] j3.TreeView::getTopNodeHidden()
[add] `collapse` event on j3.TreeNode; `nodeCollapse` event to j3.TreeView
[add] `options.expandOnDoubleClick` support for j3.TreeView
[change] className change of file list in j3.Uploader
[add] default height of `.list-item-attrs`.