use faster cElementTree when possible
use faster cElementTree when possible

MathieuDuponchelle/pyechonest3,echonest/pyechonest,DaisukeMiyamoto/pyechonest,esternocleidomastoideo/pyechonest,DaisukeMiyamoto/pyechonest,EliteScientist/pyechonest,mmiquiabas/pyechonest,taytorious/pyechonest,esternocleidomastoideo/pyechonest,shyamalschandra/pyechonest,abhisheknshah/dynamicplaylistgenerator,krishofmans/pyechonest,mmiquiabas/pyechonest,alex/pyechonest,wisperwinter/pyechonest,yuanmeibin/pyechonest,yuanmeibin/pyechonest,beni55/pyechonest,beni55/pyechonest,KMikhaylovCTG/pyechonest,abhisheknshah/dynamicplaylistgenerator,mhcrnl/pyechonest,salah-ghanim/pyechonest,ruohoruotsi/pyechonest,ruohoruotsi/pyechonest,MathieuDuponchelle/pyechonest3,diegobill/pyechonest,andreylh/pyechonest,alex/pyechonest,mhcrnl/pyechonest,KMikhaylovCTG/pyechonest,EliteScientist/pyechonest,diegobill/pyechonest,shyamalschandra/pyechonest,Victorgichohi/pyechonest,diCaminha/pyechonest,diCaminha/pyechonest,andreylh/pyechonest,taytorious/pyechonest,wisperwinter/pyechonest,echonest/pyechonest,krishofmans/pyechonest,salah-ghanim/pyechonest,Victorgichohi/pyechonest