Provides functions to perform all steps of genome-wide
association meta-analysis for studying Genotype x Environment
interactions, from collecting the data to the manhattan plot. The
procedure accounts for the potential correlation between studies. In
addition to the Fixed and Random models, one can investigate the
relationship between QTL effects and some qualitative or quantitative
covariate via the test of contrast and the meta-regression,
respectively. The methodology is available from: (De Walsche, A., et
al. (2023) \doi{10.1101/2023.03.01.530237}).