Scratchpad notebook extension

Adds a scratchpad cell to Jupyter notebook. This is a cell in which you can execute code against the current kernel without modifying the notebook document.

Scratchpad cells can be executed using Shift-Enter (other shortcuts are appled to the notebook document). The scratchpad can be toggled by clicking the icon in the bottom-right, or via the keyboard shortcut Ctrl-B.

Credits

This extension is a copy of the extension from MinRK here: git clone git://github.com/minrk/nbextension-scratchpad.