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In step1, user changes some inputs, then clicks next step to step2.  Then, back to step1, user's inputs will lose. fix it.

https://github.com/michalkvasnicak/babel-plugin-css-modules-transform/issues/67

* Update Ellipsis compute with height & Fixed https://github.com/ant-design/ant-design-pro/issues/167

close #159

ref ReactTraining/react-router#4467

* add Ellipsis

* remove title of span

* update scaffold example

* remove dump code

* maxHeight -> lines

* update Ellipsis for all case

* remove dump code

* use bisection to imporve performance