Merge pull request
#4016 from takluyver/IPython-start-funcs...
Merge pull request
#4016 from takluyver/IPython-start-funcs
Fix IPython.start_* functions
start_kernel() didn't work at all (#4005), and I found while investigating that passing user_ns to either start_ipython() or start_kernel() had no effect, because the Application wasn't passing it on to the Shell.
This is a simple fix for the most pressing issues. We should think about any other parameters that we want to be passed through from our top level API, e.g. possibly user_module.
closes
#4005
