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A general description is here.
‘scale.default(x, center, scale)’ now also allows ‘center’ or ‘scale’ to be “numeric-alike”, i.e., such that ‘as.numeric(.)’ coerces them correctly. This also eliminates a wrong error message in such cases.
‘R CMD INSTALL’ now correctly sets C++ compiler flags when all source files are in sub-directories of ‘src’.