Features

Adds a write option WithRetrySleepLimit that imposes a time limit on retry sleeping This limit is enforced for both "come back later" sleeping informed by the write error, and configured "backoff" sleeping configured in the writer library.

This release is based off v0.1.4, the currently in-use release in IDPE and is intended to land there. This release does not include the changes in v0.1.5.