Bump version to 4.18.0

Author: rmk135

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
--------------------
+4.18.0
+------
 - Add ``container.reset_singleton()`` method to reset container singletons.
 - Refactor ``container.apply_container_providers_overridings()`` to use ``container.traverse()``.
   This enables deep lazy initialization of ``Container`` providers.

src/dependency_injector/__init__.py

@@ -1,6 +1,6 @@
 """Top-level package."""
 
-__version__ = '4.17.0'
+__version__ = '4.18.0'
 """Version number.
 
 :type: str