try ipython#3 , short cut

[Q] how to run ipython notebook cells at one time?
[Q] how to run a whole ipython notebook instead of an indivisual cell?

-->
https://github.com/ipython/ipython/pull/4319
https://github.com/ipython/ipython/issues/2228

* menu:  Cell -> Run All
* keyboard: CTRL M, R shortcut for "run all cells" in the notebook


//=== interrupt
menu: Kernel  -> Interrupt
or
keyboard: Ctrl-m i

//=== restart
menu: Kernel  -> Restart menu
or
keyboard: Ctrl-m .


//===
'dd' to delete a cell