Now only new tweets are retrieved, instead of retrieving all tweets, including those that were already retrieved.
Now only new tweets are retrieved, instead of retrieving all tweets, including those that were already retrieved.

erichilarysmithsr/givinggraph,math4youbyusgroupillinois/givinggraph,math4youbyusgroupillinois/givinggraph,dssg/givinggraph,math4youbyusgroupillinois/givinggraph,dssg/givinggraph,erichilarysmithsr/givinggraph,dssg/givinggraph,erichilarysmithsr/givinggraph