Updated retrospective from survey.
Updated retrospective from survey.

benabraham/cz.pycon.org-2017,benabraham/cz.pycon.org-2017,pyvec/cz.pycon.org-2016,pyvec/cz.pycon.org-2016,benabraham/cz.pycon.org-2017,pyvec/cz.pycon.org-2017,pyvec/cz.pycon.org-2017,pyvec/cz.pycon.org-2016,pyvec/cz.pycon.org-2017