Update tests for change to mcols() in S4Vectors
Update tests for change to mcols() in S4Vectors

mcols() changed 'use.names' default from FALSE to TRUE (https://github.com/Bioconductor/S4Vectors/commit/04cc9516af986b30445e99fd1337f13321b7b4f6)
PeteHaitch/GenomicTuples,PeteHaitch/GenomicTuples