📚 Add docs for receiver thread & server responses (backport) #440
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Most importantly, this documents the scenarios that need extra care to avoid memory leaks: * Commands such as #list or #fetch can have an enormous number of responses. * Commands such as #fetch can result in an enormous size per response. * Long-lived connections will gradually accumulate unsolicited server responses, especially +EXISTS+, +FETCH+, and +EXPUNGE+ responses. * A buggy or untrusted server could send inappropriate responses, which could be very numerous, very large, and very rapid.
nevans
added
documentation
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Backports #418 (including tweak from #437) to
v0.2-stable.