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The ‘format’ method for ‘object_size’ objects now also accepts “binary” units such as ‘"KiB"’ and e.g., ‘"Tb"’. (partly from PR#16649)
‘withCallingHandler()’ now (again) handles warnings even during S4 generic's argument evaluation. (PR#16111)
The ‘make’ macro ‘AWK’ which is long unused by R itself but recorded in file ‘etc/Makeconf’ is deprecated and will be removed in R 3.3.0.