angular-ui-grid merge cells in column(合并列上的单元格)

问题：

I would like to pull a feature request that you implement a rowspan over 2 or more rows.

This feature greatly help me improving my cell templates when I have a double lessons to prepare!

It should be possible to decide during runtime wether to render a row with a single cell or a merge cell/cells depending on a viewmodels property.

摘自angular-ui-grid的issue845

包括issue1464 和 issue259 都有提出这个问题

插件作者在issue1464中提到的解决方案是Custom template（自定义模板）

This is now included in the templates tutorial: http://ui-grid.info/docs/#/tutorial/317_custom_templates.

Merging all cells in a row is reasonably straightforward, merging just some cells would be somewhat more complex, but still possible through that same mechanism.

在issue1464中热心网友给出的实例是：

http://plnkr.co/edit/Ze6axa9GljdTpEcfYkIb?p=preview