Rcompadre and Rage—Two R packages to facilitate the use of the COMPADRE and COMADRE databases and calculation of life-history traits from matrix population models by Jones, O, Barks, P, Stott, I, James, T, Levin, S, Petry, W, Capdevila, P, Che-Castaldo, J, Jackson, J, Roemer, G, Schuette, C, Thomas, C, Salguero-Gomez, R