jitter

Adds randomized "equal jitter" to the linear backoff (half the computed delay, plus a random amount up to the other half) — true by default. Without jitter, many concurrent callers hitting the same transient failure (a GC pause, a brief coordinator blip) retry at synchronized intervals, turning a transient blip into a self-inflicted retry burst against the cluster. See ISS-069 / GH #70 item 5.