docs(CHANGES): Note python 3.11 support

Author: tony

CHANGES

@@ -15,6 +15,28 @@ $ pip install --user --upgrade --pre libvcs
 
 <!-- Maintainers, insert changes / features for the next release here -->
 
+### What's new
+
+#### Python 3.11 support (#433)
+
+Official support for python 3.11
+
+#### URLs: Mapping now class attributes (#433)
+
+`URL.rule_map` is now a class attribute rather than a dataclass attribute.
+
+```console
+  File "/home/user/.python/3.11.0/lib/python3.11/dataclasses.py", line 1211, in wrap
+    return _process_class(cls, init, repr, eq, order, unsafe_hash,
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/home/user/.python/3.11.0/lib/python3.11/dataclasses.py", line 959, in _process_class
+    cls_fields.append(_get_field(cls, name, type, kw_only))
+                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/home/user/.python/3.11.0/lib/python3.11/dataclasses.py", line 816, in _get_field
+    raise ValueError(f'mutable default {type(f.default)} for field '
+ValueError: mutable default <class 'libvcs.url.base.RuleMap'> for field rule_map is not allowed: use default_factory
+```
+
 ## libvcs 0.19.1 (2022-10-23)
 
 #### Tests
@@ -23,8 +45,7 @@ $ pip install --user --upgrade --pre libvcs
 
 #### Documentation
 
-- CLI, git: Split subcommands into separate pages (remote, stash, submodule),
-  via #432
+- CLI, git: Split subcommands into separate pages (remote, stash, submodule), via #432
 
 ## libvcs 0.19.0 (2022-10-23)