Initial release. Provides an R interface to the Apache DataSketches C++ library:
kll_doubles(), kll_floats(), req(), and
tdigest_double().hll(), cpc(), and theta() (with set
operations).frequent_items() and count_min().array_of_doubles() (with set operations).varopt() and ebpps().bloom_filter().All sketches provide $update(), $merge(), $summary(), $inspect(),
and native $serialize() / bytes = round-tripping, plus format(),
print(), as.character(), and summary() methods.