K2-288Bb: a small temperate planet in a low-mass binary system discovered by citizen scientists by Feinstein, AD, Schlieder, JE, Livingston, JH, Ciardi, DR, Howard, AW, Arnold, L, Barentsen, G, Bristow, M, Christiansen, JL, Crossfield, IJM, Dressing, CD, Gonzales, EJ, Kosiarek, M, Lintott, CJ, Miller, G, Morales, FY, Petigura, EA, Thackeray, B, Ault, J, Baeten, E, Jonkeren, AF, Langley, J, Moshinaly, H, Pearson, K, Tanner, C, Treasure, J