This blog is updated daily.
A general description is here.
The ‘contrasts’ setter function ‘`contrasts<-`’ gains an explicit default ‘how.many = NULL’ rather than just using ‘missing(how.many)’.
‘grid.pretty()’ gains a new optional argument ‘n = 5’.
There is a new function ‘.pretty()’ with option ‘bounds’ as technical utility version of ‘pretty()’. It and ‘pretty()’ gain a new argument ‘f.min’ with a better than back-compatible default.
Function ‘grDevices::axisTicks()’ and related functions such as ‘graphics::axis()’ work better, notably for the log scale; partly because of the ‘pretty()’ improvements, but also because care is taken e.g., when ‘ylim’ is finite but ‘diff(ylim)’ is infinite.
‘nclass.FD()’ gains a ‘digits’ option.
‘R CMD INSTALL’ no longer tangles vignettes. This completes an ‘R CMD build’ change in R 3.0.0 and affects packages built before R 3.0.2. Such packages should be re-made with ‘R CMD build’ to have the tangled R code of vignettes shipped with the tarball.
The (non-default and deprecated) ‘method = "internal"’ for ‘download.file()’ and ‘url()’ no longer supports ‘http://’ nor ‘ftp://’ URIs. (It is used only for ‘file://’ URIs.)
On Windows, ‘download.file(method = "wininet")’ no longer supports ‘ftp://’ URIs. (It is no longer the default method, which is ‘"libcurl"’ and does.)
On Windows, the deprecated ‘method = "wininet"’ now gives a warning for ‘http://’ and ‘https://’ URIs for both ‘download.file()’ and ‘url()’. (It is no longer the default method.)
Messages from C code in the ‘cairo’ section of package ‘grDevices’ are now also offered for translation, thanks to Michael Chirico's PR#18123.
The undocumented limit of 4095 bytes on messages from the S-compatibility macros ‘PROBLEM’ and ‘MESSAGE’ is now documented and longer messages will be silently truncated rather than potentially causing segfaults.
The workaround in headers ‘R.h’ and ‘Rmath.h’ (‘use namespace std:’) for the Oracle Developer Studio compiler is no longer needed now C++11 is required so has been removed. A few more usages of ‘log’ with an integer argument are reported on Solaris.