Fix graphing after bambi 0.14 is released

[digicosmos86]

One good resource for update is bambinos/bambi#804

[YuanboBQ]

Hi, Paul
After updated HSSM 0.2.3, I still can not successfully using graph(). When I run the code simple_ddm_model.graph(), the following error occur.

[890](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:890) """Produce a graphviz Digraph from a built HSSM model.
    [891](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:891) 
    [892](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:892) Requires graphviz, which may be installed most easily with `conda install -c
   (...)
    [924](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:924)     Credit for the code goes to Bambi developers.
    [925](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:925) """
    [926](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:926) self.model._check_built()
    [928](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:928) graphviz = HSSMModelGraph(
    [929](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:929)     model=self.pymc_model, parent=self._parent_param
--> [930](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:930) ).make_graph(formatting=formatting, response_str=self.response_str)
    [932](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:932) width, height = (None, None) if figsize is None else figsize
    [934](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/hssm.py:934) if name is not None:

File ~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:205, in HSSMModelGraph.make_graph(self, var_names, formatting, response_str)
    [203](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:203)     raise e
    [204](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:204) graph = graphviz.Digraph(self.model.name)
--> [205](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:205) for plate_label, all_var_names in self.get_plates(var_names).items():
    [206](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:206)     if plate_label:
    [207](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:207)         # must be preceded by 'cluster' to get a box around it
    [208](https://file+.vscode-resource.vscode-cdn.net/Users/yuanbo/Work%20and%20Study/Python_projects/HSSM/~/miniforge3/envs/hssm/lib/python3.11/site-packages/hssm/utils.py:208)         with graph.subgraph(name="cluster" + plate_label) as sub:

AttributeError: 'list' object has no attribute 'items'

[digicosmos86]

There might be some corner cases that we did not think of. However, this should be fixed via Bambi v0.14.0 and the graph should look cleaner. Please stay tuned.

[digicosmos86]

This is fixed via #521