Prepare v0.3.13

docs/changelog.rst

@@ -18,8 +18,8 @@ To avail of fixes in an unreleased version, please download a ZIP file
 `directly from GitHub <https://github.com/mitogen-hq/mitogen/>`_.
 
 
-In Progress (unreleased)
-------------------------
+v0.3.13 (2024-10-09)
+--------------------
 
 * :gh:issue:`1138` CI: Complete migration from Azure DevOps Pipelines to
   GitHub Actions

mitogen/__init__.py

@@ -35,7 +35,7 @@ be expected. On the slave, it is built dynamically during startup.
 
 
 #: Library version as a tuple.
-__version__ = (0, 3, 13, 'dev')
+__version__ = (0, 3, 13)
 
 
 #: This is :data:`False` in slave contexts. Previously it was used to prevent