Avoid deprecation warning with IPython 4.x
IPython 4.x moves IPython.config --> traitlets.config Avoid deprecation warnings by using traitlets.
(note: I just found this one when fixing [1] ... but there may be more deprecated usages)
IPython 4.x moves IPython.config --> traitlets.config Avoid deprecation warnings by using traitlets.
(note: I just found this one when fixing [1] ... but there may be more deprecated usages)