tokens: We thank J. Bernal, L. Verde, and D. Scolnic for useful conversations and E. Calabrese for providing the ACTpol r s constraint in Figure 3 . We use the CosmoSlik package Millea ( 2017 ) to sample our results. The work of K.A. and L.K. was supported in part by NSF support for the South Pole Telescope collaboration via grant OPP-1248097. The work of M.J. was supported via the NSF REU program at UC Davis via grant PHY-1560482. S.R. is supported by the Australian Research Council’s Discovery Projects scheme via grant DP150103208. W.L.K.W. was supported in part by the Kavli Institute for Cosmological Physics at the University of Chicago through an endowment from the Kavli Foundation and its founder, Fred Kavli.
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