https://github.com/deeptools/HiCExplorer/blob/c2ad8630c48e04f0ce4229d75d4b1766df79317c/hicexplorer/lib/buildMatrixMethods.py#L79 should it be "if chrom1 < chrom2:" , like https://github.com/deeptools/HiCExplorer/blob/c2ad8630c48e04f0ce4229d75d4b1766df79317c/hicexplorer/lib/buildMatrixMethods.py#L74
