Update changelog to mention new "reinstall()" method

CHANGELOG.rst

@@ -1,6 +1,7 @@
 `Unreleased`_
 =============
 
+- Add new ``logger.reinstall()`` method to automatically set up the ``logger`` in spawned child processes (`#818 <https://github.com/Delgan/loguru/issues/818>`_, thanks `@monchin <https://github.com/monchin>`_).
 - Fix a regression preventing formatting of ``record["time"]`` when using ``zoneinfo.ZoneInfo`` timezones (`#1260 <https://github.com/Delgan/loguru/pull/1260>`_, thanks `@bijlpieter <https://github.com/bijlpieter>`_).
 - Fix possible ``ValueError`` raised on Windows when system clock was set far ahead in the future (`#1291 <https://github.com/Delgan/loguru/issues/1291>`_).
 - Allow the ``rotation`` argument of file sinks to accept a list of rotation conditions, any of which can trigger the rotation (`#1174 <https://github.com/Delgan/loguru/issues/1174>`_, thanks `@CollinHeist <https://github.com/CollinHeist>`_).