Added information to CHANGELOG I forgot to add earlier.

CHANGELOG

@@ -14,6 +14,12 @@
 
   SoupSieve documentation: https://facelessuser.github.io/soupsieve/
 
+* Added the PageElement.extend() method, which works like list.append().
+   [bug=1514970]
+
+* PageElement.insert_before() and insert_after() now take a variable
+   number of arguments. [bug=1514970]
+
 * Fix a number of problems with the tree builder that caused
   trees that were superficially okay, but which fell apart when bits
   were extracted. Patch by Isaac Muse. [bug=1782928,1809910]

prepare-release.sh

@@ -13,6 +13,18 @@
 
 rm -rf build dist
 
+# Run this in a Python 2 env and a Python 3 env to make both sdist and
+# wheels.
+python setup.py sdist bdist_wheel
+
+# Run this in Python 3 env.
+twine upload --repository-url https://test.pypi.org/legacy/ dist/*
+
+twine upload dist/*
+
+# Old instructions:
+
+
 # Create the 2.x source distro and wheel
 python setup.py sdist bdist_wheel