Constraints on the symmetry energy and neutron skins from experiments and theory by Tsang, M, Stone, JR, Camera, F, Danielewicz, P, Gandolfi, S, Hebeler, K, Horowitz, C, Lee, J, Lynch, W, Kohley, Z, Lemmon, R, Moeller, P, Murakami, T, Riordan, S, Roca-Maza, X, Sammarruca, F, Steiner, A, Vidana, I, Yennello, S