Fix xrange in test_timeseries
Fix xrange in test_timeseries

mrshirts/pymbar,jchodera/pymbar,choderalab/pymbar,choderalab/pymbar,wesbarnett/pymbar,kyleabeauchamp/pymbar,wesbarnett/pymbar,kyleabeauchamp/pymbar,Lnaden/pymbar,Lnaden/pymbar,Lnaden/pymbar,choderalab/pymbar,wesbarnett/pymbar,mrshirts/pymbar,kyleabeauchamp/pymbar,mrshirts/pymbar,jchodera/pymbar,jchodera/pymbar,wesbarnett/pymbar,jchodera/pymbar,mrshirts/pymbar,kyleabeauchamp/pymbar