Creating a DelayedMatrix of Scaled and Centered Values
person("Aaron", "Lun", role=c("aut", "cre", "cph"),
        email="infinite.monkeys.with.keyboards@gmail.com")
testthat, BiocStyle, knitr, rmarkdown, BiocSingular
Provides delayed computation of a matrix of scaled and centered values.
    The result is equivalent to using the scale() function but avoids explicit 
    realization of a dense matrix during block processing. This permits greater
    efficiency in common operations, most notably matrix multiplication.