Release 0.8.4
Release 0.8.4

aitboudad/Payum,StoreFactory/Payum,StoreFactory/Payum,fullpipe/Payum,Payum/Payum,StoreFactory/Payum,fullpipe/Payum,Payum/Payum,staabm/Payum,formapro-forks/Payum,ASKozienko/Payum,formapro-forks/Payum