merge topic/bernhard/hyperloglog

Description

The branch adds support for the hyperloglog data structure.

In the branch, core/leaks/basic-cluster.bro currently faisl. However, this seems to be unrelated to hll and just to be triggered by the addition of it to the sumstats tests. It looks like some kind of scriptland issue. pprof output is attached. (master, workers don't leak memory)

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Assignee

Unassigned

Reporter

Johanna Amann

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