v2.1.2

This release contains fixes, and several improvements and new features to
the JupyterViz/Solara frontend. It's a patch release instead of a minor release
because the JupyterViz frontend is still considered experimental.

Improvements

• perf: Access grid only once #1751
• docs: compile notebooks at build time #1753
• docs: Remove nbsphinx and explicit .ipynb suffix #1754
• rtd: Use gruvbox-dark as style #1719
• build(deps): bump actions/checkout from 3 to 4 #1790

Solara/JupyterViz

• solara: Implement visualization for network grid #1767
• Add support for select input type #1779
• Add step count display to JupyterViz #1775
• Simplify solara code #1786
• Add docstring for jupyterviz make_user_input that documents supported inputs #1784
• Revise, test, & document JupyterViz options for drawing agent space #1783
• Add UserInputs component #1788
• Fix: Remove dict merge operator, python 3.8 compat #1793
• feat: Add reset button to JupyterViz #1795
• Add support for solara.Checkbox user input #1798
• viz tutorial: Update custom plot to reflect new code #1799
• fix: Don't continue playing when a model is reset #1796
• Docker: Update to use Solara viz #1757

Refactors

• Move viz stuff to mesa-viz-tornado Git repo #1746
• simplify get neighborhood #1760
• remove attrgetter performance optimization #1809

Fixes

• fix: Add Matplotlib as dependency #1747
• fix install for visualization tutorial in colab #1752
• fix: Allow multiple connections in Solara #1759
• Revert "Ensure sphinx>=7" #1762
• fix README pic to remove line on left side #1763
• space: Ensure get_neighborhood output & cache are immutable #1780
• fix: Use .pytemplate for name for cookiecutter #1785
• HISTORY.rst: Correct neighbor_iter() replacement in 2.0.0 #1807
• docs: Always link to stable version #1810
• Remove exclude_none_values #1813