v0.7.1

• Requires rasuvaeff/property-testing-core ^0.9, where an environmental skip
  no longer spends the discard budget and is counted apart from discards. The
  excessive-discard warning this adapter prints therefore stops firing on a
  machine that was merely missing a dependency, without a change here. ^0.8 is
  not kept alongside: the family moves together, and an adapter accepting both
  is what left -names unable to install beside one.