Bump version to 4.13.0

docs/main/changelog.rst

@@ -7,8 +7,8 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
-Development version
--------------------
+4.13.0
+------
 - Add ``default`` argument to the dependency provider: ``Dependency(..., default=...)``.
   See issue: `#336 <https://github.com/ets-labs/python-dependency-injector/issues/336>`_.
   Many thanks to `Shaun Cutts <https://github.com/shaunc>`_ for providing the use case.

src/dependency_injector/__init__.py

@@ -1,6 +1,6 @@
 """Top-level package."""
 
-__version__ = '4.12.0'
+__version__ = '4.13.0'
 """Version number.
 
 :type: str