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A general description is here.
Source references were sometimes off by a line.
The quartz() parameter 'antialias' is no longer ignored.
The Quartz device is now trying hard to remove anti-aliasing effects for rasterized backends in plots that use adjacent, borderless rectangles such as image().
The srcfilecopy() function now adds a timestamp to the object it creates.
parse() would lose a token when run on stdin().
conformMethod(), called by setMethod(), now checks better about argument names in wrong order. Whereas it only warns currently, it is planned to become be an error in the future.