Updated citation, added showcase entry

Author: viblo

CITATION.cff

@@ -0,0 +1,10 @@
+cff-version: 1.2.0
+message: "If you use this software and want to cite it, please do so as below."
+authors:
+- family-names: "Blomqvist"
+  given-names: "Victor"
+title: "Pymunk"
+abstract: "A easy-to-use pythonic rigid body 2d physics library"
+version: 6.2.1
+date-released: 2022-01-25
+url: "https://pymunk.org"

README.rst

@@ -16,7 +16,7 @@ Pymunk has been used with success in many projects, big and small. For example:
 papers and even in a self-driving car simulation! See the Showcases section on 
 the Pymunk webpage for some examples.
 
-2007 - 2021, Victor Blomqvist - [email protected], MIT License
+2007 - 2022, Victor Blomqvist - [email protected], MIT License
 
 This release is based on the latest Pymunk release (6.2.1), 
 using Chipmunk 7 rev 0593976ef47fcb3957166bd342f6b2bafe4d0e44 .

docs/src/_static/bouncingballs-beatuifulpatterns.png

@@ -116,7 +116,7 @@ def load_module(self, fullname):
 
 # General information about the project.
 project = u"pymunk"
-copyright = u"2013-2020, Victor Blomqvist"
+copyright = u"2013-2022, Victor Blomqvist"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the

docs/src/conf.py

@@ -85,6 +85,20 @@ Non-Games
 .. list-table::
     :widths: 40 60 
 
+    * - .. image:: _static/bouncingballs-beatuifulpatterns.png
+      - `Bouncing Balls, Beautiful Patterns <https://youtu.be/nDhOGsBj1fA>`_
+
+        :subscript:`made by Alessandro Giusti. Retrieved 2022-01-25`
+
+        Satisfying simulations of bouncing balls obeying physical laws; for 
+        a fleeting moment during the simulation, the balls pass through a 
+        beautiful regular arrangement.
+
+        Each sequence is obtained by joining two simulations, both starting 
+        from the time in which the balls are arranged regularly. One 
+        simulates forward in time, one backwards.
+
+
     * - .. image:: _static/manim-physics.png
       - `manim-physics <https://github.com/Matheart/manim-physics>`_
 
@@ -502,17 +516,10 @@ me!
 Cite Pymunk
 -----------
 
-If you use Pymunk in a published work and want to cite it, below is a bibtex
-example. Feel free to modify to fit your style. (Make sure to modify the 
-version number if included.):
-
-.. code-block:: bibtex
-
-  @misc{pymunk,
-    author = {Victor Blomqvist},
-    title = {Pymunk: A easy-to-use pythonic rigid body 2d physics library (version 6.2.1)},
-    year = {2007},
-    url = {https://www.pymunk.org},
-  }
+If you use Pymunk in a published work and want to cite it, below is a 
+citation.cff example. Feel free to modify to fit your style. (Make sure to 
+modify the version number if included.):
 
+.. include:: ../../CITATION.cff
+   :code: yaml