Updates ipython to 2.4.1 based on comments in http://ipython.org/ipython-doc/2/whatsnew/version2.0.html
Updates ipython to 2.4.1 based on comments in http://ipython.org/ipython-doc/2/whatsnew/version2.0.html

parthea/datalab,craigcitro/datalab,parthea/datalab,googledatalab/datalab,parthea/datalab,googledatalab/datalab,parthea/datalab,parthea/datalab,googledatalab/datalab,yebrahim/datalab,craigcitro/datalab,yebrahim/datalab,craigcitro/datalab,parthea/datalab,yebrahim/datalab,googledatalab/datalab,googledatalab/datalab,craigcitro/datalab,craigcitro/datalab,yebrahim/datalab,googledatalab/datalab,yebrahim/datalab