Bumped to 5.6 in preparation for next release.

ez_setup.py

@@ -36,7 +36,7 @@ try:
 except ImportError:
     USER_SITE = None
 
-DEFAULT_VERSION = "5.5"
+DEFAULT_VERSION = "5.6"
 DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/"
 
 def _python_cmd(*args):

setuptools.egg-info/entry_points.txt

@@ -36,6 +36,7 @@ install_requires = setuptools.dist:check_requirements
 namespace_packages = setuptools.dist:check_nsp
 package_data = setuptools.dist:check_package_data
 packages = setuptools.dist:check_packages
+setup_reqires = setuptools.dist:check_requirements
 test_loader = setuptools.dist:check_importable
 test_runner = setuptools.dist:check_importable
 test_suite = setuptools.dist:check_test_suite

setuptools/version.py

-__version__ = '5.5'
+__version__ = '5.6'