change collection of systems in InterconnectedSystem, from tuple () -> list []

Author: KybernetikJo

examples/mrac_siso_direct_mit_rule_statespace.py

@@ -116,7 +116,7 @@ def adaptive_controller_output(t, xc, uc, params):
 
 # Overall closed loop system
 io_closed = ct.InterconnectedSystem(
-    (io_plant, io_ref_model, io_controller),
+    [io_plant, io_ref_model, io_controller],
     connections=[
         ['plant.u', 'control.u'],
         ['control.xm', 'ref_model.xm'],