Update "What about PIL?" section

docs/about.rst

@@ -35,4 +35,7 @@ What about PIL?
     Prior to Pillow 2.0.0, very few image code changes were made. Pillow 2.0.0
     added Python 3 support and includes many bug fixes from many contributors.
 
-As more time passes since the last PIL release (1.1.7 in 2009), the likelihood of a new PIL release decreases. However, we've yet to hear an official "PIL is dead" announcement.
+.. role:: strike
+    :class: strike
+
+As more time passes since the last PIL release (1.1.7 in 2009), the likelihood of a new PIL release decreases. :strike:`However, we've yet to hear an official "PIL is dead" announcement.` In January 2020, `the PyPI moderators exhausted the PEP 541 process for contacting the PIL project owner <https://github.com/python-pillow/Pillow/issues/1535#issuecomment-570308446>`_ and the `PIL project on PyPI <https://pypi.org/project/PIL>`_ was transferred to the `Pillow team <https://github.com/python-pillow/Pillow/graphs/contributors>`_.

docs/conf.py

@@ -167,7 +167,7 @@
 # directly to the root of the documentation.
 # html_extra_path = []
 
-html_css_files = ["css/dark.css"]
+html_css_files = ["css/dark.css", "css/strike.css"]
 
 html_js_files = [
     "js/activate_tab.js",

docs/resources/css/strike.css

@@ -0,0 +1,3 @@
+.strike {
+    text-decoration: line-through;
+}