v1.2.4

Fixes

• IndexList: 修复 data改变时，subTitleHeight没有更新的问题
• Checkbox: 修复 position right 位置不正确 bug

优化

• IndexList: 样式优化，去掉 box-shadow，给导航列表的元素加类名，便于改写
• Scroll: 优化默认的上拉加载动画，增加对无文案情况的处理
• Scroll: 在 refresh 时，重新计算列表容器的 minHeight

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Fixes

• IndexList: subTitleHeight should be recalculated when data changed.
• Checkbox: fix position right UI error

Improvements

• IndexList: optimize style by removing box-shadow and adding class names for the elements of navigator list.
• Scroll: optimize the default animation of pull up load and deal the situation of non-text
• Scroll: recalculate the minHeight of listWrapper when refresh.