WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope by Dalton, G, Trager, S, Abrams, D, Carter, D, Bonifacio, P, Aguerri, J, MacIntosh, M, Evans, C, Lewis, I, Navarro, R, Agocs, T, Dee, K, Rousset, S, Tosh, I, Middleton, K, Pragt, J, Terrett, D, Brock, M, Benn, C, Verheijen, M, Cano, D, Bevil, C, Steele, I, Mottram, C, Bates, S