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A general description is here.
z^n for integer n and complex z or (numeric z and 2 < |n| <= 256) is more accurate now, notably in the complex case (if |n| <= 65536).
factor(NULL) now returns the same as factor(''[0]) instead of an error, and table(NULL) consequently does analogously.
as.data.frame.vector() (and its copies) is slightly faster by avoiding a copy if there are no names (following a suggestion of Tim Hesterburg).
z^n for integer n and complex z or (numeric z and 2 < |n| <= 256) is now
more accurate, notably in the complex case (when |n| <= 65536).
print.anova() failed to recognize the column labelled P(>|Chi|) from a Poisson/binomial GLM anova as a p-value column in order to format it appropriately (and as a consequence it gave no significance stars).