v16

• .IN_SEQUENCE(...) can now be used with REQUIRE_DESTRUCTION(...)
  and NAMED_REQUIRE_DESTRUCTION(...) to ensure objects are destroyed in the intended order.
  Example:

  auto p1 = new trompeloeil::deathwatched<mock1>;
  auto p2 = new trompeloeil::deathwatched<mock2>;
  
  trompeloeil::sequence s;
  REQUIRE_DESTRUCTION(*p1)
    .IN_SEQUENCE(s);
  REQUIRE_DESTRUCTION(*p2)
    .IN_SEQUENCE(s);
  call_destroyer(p1, p2); // both must be destroyed, p1 before p2.

• class trompeloeil::lifetime_monitor now inherits from class trompeloeil::expectation, so using

  std::unique_ptr<expectation> p = NAMED_REQUIRE_DESTRUCTION(obj);

  instead of

  std::unique_ptr<lifetime_monitor> p = NAMED_REQUIRE_DESTRUCTION(obj);

  works equally well, reduces the cognitive load a bit, and seems to build slightly faster.