Add example testcase that includes carry set

ex.py

@@ -19,18 +19,15 @@ prgm = Program(
 )
 
 outputs = [R8.A]
-test_cases = [TestCase()]
+test_cases = [TestCase(), TestCase(state=CPUState(carry=1))]
 
 params = OptimizationParameters(max_size=4)
 
-initial_cost = cost(prgm, test_cases, outputs, prgm)
-initial_cycles = prgm.perf()
-
 print("Program to optimize:")
 prgm.display()
 
-print(f"Cost: {initial_cost[0]}")
-print(f"Cycles: {initial_cycles}")
+print(f"Cost: 0.0")
+print(f"Cycles: {prgm.perf()}")
 
 start_time = time()