ipython/ipython — pull request #1705 by Carreau (2012-05-06 19:11:53+00:00)
Title: [notebook] Make pager resizable, and remember size...

Resizing to small collapse the pager keeping the size to at least 20%
height

(trying to) resize a collapsed pager to more than 10% "expand" it.

Pager can remember it size when toggling by clicking.