add chosen
add chosen

pydata/symposion,NelleV/pyconfr-test,pyconca/2013-web,TheOpenBastion/symposion,python-spain/symposion,mbrochh/symposion,pydata/symposion,faulteh/symposion,miurahr/symposion,toulibre/symposion,toulibre/symposion,python-spain/symposion,pyohio/symposion,faulteh/symposion,pyohio/symposion,pyconau2017/symposion,euroscipy/symposion,euroscipy/symposion,NelleV/pyconfr-test,pyconau2017/symposion,mbrochh/symposion,TheOpenBastion/symposion,pyconca/2013-web,pinax/symposion,miurahr/symposion,pinax/symposion