Pass in list of sources for new documents iterator
Pass in list of sources for new documents iterator

erinspace/scrapi,mehanig/scrapi,icereval/scrapi,felliott/scrapi,erinspace/scrapi,alexgarciac/scrapi,CenterForOpenScience/scrapi,CenterForOpenScience/scrapi,fabianvf/scrapi,felliott/scrapi,ostwald/scrapi,jeffreyliu3230/scrapi,fabianvf/scrapi,mehanig/scrapi