This blog is updated daily..
A general description is here.
‘as<-()’ avoids an infinite loop when a virtual class comes between a subclass and an actual superclass.
Fix level propagation in ‘unlist()’ when the list contains zero-length lists or factors.
Fix S3 dispatch on S4 objects when the ‘methods’ package is not attached.
Internal S4 dispatch sets ‘.Generic’ in the method frame for consistency with ‘standardGeneric()’ (PR#16929).
Fix ‘order(x, decreasing=TRUE)’ when ‘x’ is an integer vector containing ‘MAX_INT’. Ported from a fix Matt Dowle made to ‘data.table’.