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The limit for ‘R_alloc’ on 64-bit platforms has been raised to just under 32GB (from just under 16GB).
‘maintainer()’ now converts embedded new lines to spaces.
‘duplicated()’, ‘unique()’ and similar are now no longer limits to vectors of lengths from 2^29 on 64-bit platforms.
‘unique()’ and similar would infinite-loop if called on a vector of length > 2^29 (but reported that the vector was too long for 2^30 or more).