Merge pull request
#3162 from ivanov/output-stream-kwarg...
Merge pull request
#3162 from ivanov/output-stream-kwarg
adding stream kwarg to current.new_output
This was missing, and made unnecessarily clunky to create output cells
of stream type using the nbformat API.
Before this commit, you had to do something like
from IPython.nbformat import current as c
output = c.new_output('stream', the_text)
output['stream'] = 'stdout'
after this commit
from IPython.nbformat import current as c
output = c.new_output('stream', the_text, stream='stdout')
and actually, that stream= argument defaults to 'stdout' if it isn't given.
I modified a test that will break if this functionality is ever removed.
