Log Message:
py-ipython: update to 6.2.1

IPython 6.2.1:
IPython 6.2.1 ships with two minor fixes leading to no completions when using \ 
Jedi 0.11+, and crash on some linux system with virtualenv

IPython 6.2:
IPython 6.2 contains all the bugs fixes and features available in IPython 5.5, \ 
like built in progress bar support, and system-wide configuration