Add dev note

Author: jofmi

README.md

@@ -8,21 +8,17 @@
 AgentPy is an open-source library for the development and analysis of agent-based models in Python.
 The framework integrates the tasks of model design, interactive simulations, numerical experiments,
 and data analysis within a single environment. The package is optimized for interactive computing
-with [IPython](http://ipython.org/), [IPySimulate](https://github.com/JoelForamitti/ipysimulate), and [Jupyter](https://jupyter.org/).
+with [IPython](http://ipython.org/) and [Jupyter](https://jupyter.org/).
 
-Please cite this software as follows:
-
-    Foramitti, J., (2021). AgentPy: A package for agent-based modeling in Python.
-    Journal of Open Source Software, 6(62), 3065, https://doi.org/10.21105/joss.03065
+**Note:** AgentPy is no longer under active development. For new projects, we recommend using [MESA](https://mesa.readthedocs.io/stable/).
 
 **Installation:** `pip install agentpy`
 
 **Documentation:** https://agentpy.readthedocs.io
 
 **JOSS publication:** https://doi.org/10.21105/joss.03065
 
-**Discussion forum:** https://github.com/JoelForamitti/agentpy/discussions
-
-**Tutorials and examples:** https://agentpy.readthedocs.io/en/latest/model_library.html
+Please cite this software as follows:
 
-**Comparison with other frameworks**: https://agentpy.readthedocs.io/en/latest/comparison.html
+    Foramitti, J., (2021). AgentPy: A package for agent-based modeling in Python.
+    Journal of Open Source Software, 6(62), 3065, https://doi.org/10.21105/joss.03065

docs/comparison.rst

@@ -20,9 +20,9 @@ AgentPy - Agent-based modeling in Python
 AgentPy is an open-source library for the development and analysis of agent-based models in Python.
 The framework integrates the tasks of model design, interactive simulations, numerical experiments,
 and data analysis within a single environment. The package is optimized for interactive computing
-with `IPython <http://ipython.org/>`_, `IPySimulate <https://github.com/JoelForamitti/ipysimulate>`_, and `Jupyter <https://jupyter.org/>`_.
-If you have questions or ideas for improvements, please visit the
-`discussion forum <https://github.com/JoelForamitti/agentpy/discussions>`_.
+with `IPython <http://ipython.org/>`_ and `Jupyter <https://jupyter.org/>`_.
+
+**Note:** AgentPy is no longer under active development. For new projects, we recommend using [MESA](https://mesa.readthedocs.io/stable/).
 
 .. rubric:: Quick orientation
 
@@ -53,7 +53,6 @@ Please cite this software as follows:
    guide
    model_library
    reference
-   comparison
    changelog
    contributing
    about