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A general description is here.
(Windows only.) ‘file.symlink()’ works around the undocumented restriction of the Windows system call to backslashes. (Wish of PR#15631.)
‘deparse()’ now deparses complex vectors in a way that re-parse to the original values. (PR#15534, patch based on code submitted by Alex Bertram.)
In some extreme cases (more than 10^15) integer inputs to ‘dpqrxxx()’ functions might have been rounded up by one (with a warning about being non-integer). (PR#15624)
‘pbeta(x, a, b, log.p = TRUE)’ sometimes underflowed to zero for very small and very differently sized ‘a’, ‘b’. (PR#15641)