Avoid hardcoding namespaces, define constants for all namespaces we use
Avoid hardcoding namespaces, define constants for all namespaces we use

FreshRSS/simplepie,wikidi/simplepie,Alkarex/simplepie,mblaney/simplepie,Alkarex/simplepie,wikidi/simplepie,mblaney/simplepie,simplepie/simplepie,Alkarex/simplepie,simplepie/simplepie,songfj/simplepie,FreshRSS/simplepie,gsnedders/complexpie,wikidi/simplepie,barryvdh/simplepie,skyzyx/simplepie,songfj/simplepie,songfj/simplepie,blat/simplepie,barryvdh/simplepie,Alexia/SimplePie,ropik/simplepie,Alexia/SimplePie,barryvdh/simplepie,ropik/simplepie,blat/simplepie,blat/simplepie,skyzyx/simplepie