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A general description is here.
Loading the ‘parallel’ package namespace no longer sets or changes the ‘.Random.seed’, even if ‘R_PARALLEL_PORT’ is unset.
Package ‘tools’ has a new function ‘package_native_routine_registration_skeleton()’ to assist adding native-symbol registration to a package. See its help and §5.4.1 of ‘Writing R Extensions’ for how to use it. (At the time it was added it successfully automated adding registration to over 90% of CRAN packages which lacked it. Many of the failures were newly-detected bugs in the packages, e.g. 50 packages called entry points with varying numbers of arguments and 65 packages called entry points not in the package.)
The check for the zlib version is now robust to versions longer than 5
characters, including 1.2.10.
The ‘configure’ check for the ‘zlib’ version is now robust to versions longer than 5 characters, including ‘1.2.10’.