Error should stringify (to ->status)

	modified:   lib/POEx/Weather/OpenWeatherMap/Error.pm
Result::Current; better method naming, fix lazy_for

	modified:   lib/POEx/Weather/OpenWeatherMap/Result/Current.pm
Request; missing import

	modified:   lib/POEx/Weather/OpenWeatherMap/Request.pm
Result; error should return empty str if ->is_success

	modified:   lib/POEx/Weather/OpenWeatherMap/Result.pm
add a few initial test helpers

	new file:   t/inc/OWMTestUtil.pm
Error, Result::Current tests

	modified:   t/class/openweathermap/error.t
	deleted:    t/class/openweathermap/request.t
	deleted:    t/class/openweathermap/result.t
	modified:   t/class/openweathermap/result/current.t