bump version to dev52
bump version to dev52
miurahr/symposion,pinax/symposion,pyohio/symposion,mbrochh/symposion,NelleV/pyconfr-test,python-spain/symposion,TheOpenBastion/symposion,faulteh/symposion,faulteh/symposion,pyconca/2013-web,python-spain/symposion,NelleV/pyconfr-test,toulibre/symposion,toulibre/symposion,pyohio/symposion,pyconau2017/symposion,pyconca/2013-web,TheOpenBastion/symposion,euroscipy/symposion,miurahr/symposion,pinax/symposion,pydata/symposion,euroscipy/symposion,mbrochh/symposion,pyconau2017/symposion,pydata/symposion