update changelog

Author: chowder

CHANGELOG.md

@@ -98,6 +98,8 @@ Other changes:
 * (repositories): Add libs/python3.lib and pythonXY.dll to the `libpython` target
   defined by a repository template. This enables stable ABI builds of Python extensions
   on Windows (by defining Py_LIMITED_API).
+* (rules) `py_test` and `py_binary` targets no longer incorrectly remove the 
+  first `sys.path` entry when using {obj}`--bootstrap_impl=script`
 
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 ### Added