IgnoreErrors: return two values

[phoe]

cafe-latte/src/test/java/systems/raptor/cafe_latte/handlers/HandlerCaseTest.java

Lines 92 to 106 in 3045ae4

	@Test
	public void ignoreErrorsNoTransferTest() {
	Condition returnValue = ignoreErrors(() -> {});
	assertNull(returnValue);
	}
	@Test
	public void ignoreErrorsTransferTest() {
	Error error = new Error();
	Condition returnValue = ignoreErrors(() -> {
	signal(error);
	});
	assertNotNull(returnValue);
	assertEquals(returnValue, error);
	}

This should return a pair of a nullable return value and a nullable error to better map to the CL API.