Update package configuration and dependencies

- Replace find_packages with find_namespace_packages in setup.py to support namespace packages
- Add license parameter to specify MIT license in setup.py
- Remove unnecessary template inclusion from MANIFEST.in
- Fix description_file key in setup.cfg to match configuration standards

Author: synw

MANIFEST.in

@@ -1,5 +1,4 @@
 recursive-include mqueue/static *
-recursive-include mqueue/templates *
 recursive-include mqueue/migrations *
 recursive-include mqueue/locale *
 recursive-include mqueue/hooks *

setup.cfg

@@ -1,5 +1,5 @@
 [metadata]
-description-file = README.md
+description_file = README.md
 
 [flake8]
 max-line-length = 88

setup.py

@@ -1,5 +1,5 @@
 from os import path
-from setuptools import setup, find_packages
+from setuptools import setup, find_namespace_packages
 
 
 version = __import__("mqueue").__version__
@@ -10,7 +10,7 @@
 
 setup(
     name="django-mqueue",
-    packages=find_packages(),
+    packages=find_namespace_packages(),
     include_package_data=True,
     version=version,
     description="Events queue for Django",
@@ -25,9 +25,9 @@
         "Development Status :: 4 - Beta",
         "Framework :: Django :: 1.11",
         "Intended Audience :: Developers",
-        "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3.8",
     ],
+    license="MIT",
     zip_safe=False,
     install_requires=["django-mcpx", "django-import-export"],
 )