Update changelog for v2.2.0

[skip ci]

docs/advanced/cast/stl.rst

@@ -26,6 +26,8 @@ next sections for more details and alternative approaches that avoid this.
     The file :file:`tests/test_stl.cpp` contains a complete
     example that demonstrates how to pass STL data types in more detail.
 
+.. _cpp17_container_casters:
+
 C++17 library containers
 ========================
 

docs/advanced/functions.rst

@@ -406,6 +406,8 @@ name, i.e. by specifying ``py::arg().noconvert()``.
     need to specify a ``py::arg()`` annotation for each argument with the
     no-convert argument modified to ``py::arg().noconvert()``.
 
+.. _none_arguments:
+
 Allow/Prohibiting None arguments
 ================================
 

docs/reference.rst

@@ -9,6 +9,8 @@
 Reference
 #########
 
+.. _macros:
+
 Macros
 ======