Scheduler isn't being called

[kammce]

Given this coroutine:

bool print_was_called = false;

async::future<void> coro_print(async::context&)
{
  using namespace std::chrono_literals;
  std::println("Printed from a coroutine");
  co_await 100ns;
  std::println("Waited 100ns");
  print_was_called = true;
  co_await 100ns;
  std::println("Waited another 100ns");
  co_return;
}

The scheduler's schedule function is never called.

[kammce]

Resolved in #20