Clean-up

* Removed old/unnecessary models
* Added a `simulation.{iter_}from_py` method to load simulations from python
files
* Changed tests of examples to run programmatic simulations
* Fixed programmatic examples

examples/mesa/server.py

@@ -111,4 +111,5 @@ server = ModularServer(
 )
 server.port = 8521
 
-server.launch(open_browser=False)
+if __name__ == '__main__':
+    server.launch(open_browser=False)

examples/mesa/social_wealth.py

@@ -28,7 +28,7 @@ class MoneyAgent(MesaAgent):
     It will only share wealth with neighbors based on grid proximity
     """
 
-    def __init__(self, unique_id, model, wealth=1):
+    def __init__(self, unique_id, model, wealth=1, **kwargs):
         super().__init__(unique_id=unique_id, model=model)
         self.wealth = wealth