API: ignore empty filters
API: ignore empty filters

litui/openparliament,twhyte/openparliament,litui/openparliament,rhymeswithcycle/openparliament,twhyte/openparliament,twhyte/openparliament,rhymeswithcycle/openparliament,rhymeswithcycle/openparliament,litui/openparliament