Initial patch with Jedi completion (no function header description). Handle case when Jedi is not importable. Fix print statement vs function discrepancy. Add two-column display for function and description, remove sys.path manipulation. cleanup comments, add matcher APi instead of checking every time (#1) * Improve completion a bit to take care of what was previously "greedy" This is a bit hackins because of how IPython decides what is going to be replaced, and because completions need to strart with `text`. Add a few test cases. * require path.py * Add completion tests. * Fix some completion, in particular imports. Also completion after assignments. Add TODO about how to using Completions with Jedi.