create_test_set extended with option to add existing articles
create_test_set extended with option to add existing articles

tschmorleiz/amcat,tschmorleiz/amcat,amcat/amcat,tschmorleiz/amcat,tschmorleiz/amcat,amcat/amcat,tschmorleiz/amcat,amcat/amcat,amcat/amcat,amcat/amcat,amcat/amcat