v0.1.1

Added

• rm() and copy() take max_workers, the keyword of pathapi's recursive
  rm() and copy() (a class runs serially unless it declares _threadsafe,
  which these classes do not). A streamed copy passes it on; the batch delete and the
  store's own copy call ignore it. Nothing changes for a call that does not give it,
  and it works with the pathapi release that lacks it as long as it is not given.

Full Changelog: v0.1.0...v0.1.1