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‘iconv’ now allows ‘sub = "c99"’ to use C99-style escapes for UTF-8 inputs which cannot be converted to encoding ‘to’.
‘default.stringsAsFactors()’ is now formally deprecated, where that was only mentioned on its regular help page, previously. So it now gives a warning if called.
Quartz device no longer splits polylines into subpaths. That has caused narrowly-spaced lines with many points to always look solid even when dashed line type was used due to dash phase restarts.