Fisher Exact Scanning for Dependency // Implements Fisher exact scanning (FES), a multiscale test of dependence for continuous or discrete bivariate data. The method scans nested binary partitions using Fisher's exact tests and combines evidence across windows and resolutions with Sidak, Bonferroni, and meta-analysis corrections. The methodology is described in Ma and Mao (2019) doi:10.1080/01621459.2017.1397522.