diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b90d678
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,8 @@
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+end_of_line = lf
diff --git a/setup.cfg b/setup.cfg
index 20d367e..95c07d4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,45 @@
+[metadata]
+license = Apache-2.0
+classifiers =
+    License :: OSI Approved :: Apache Software License
+    Intended Audience :: Developers
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Topic :: Software Development :: Libraries
+    Topic :: Internet :: WWW/HTTP
+    Framework :: AsyncIO
+    Operating System :: MacOS :: MacOS X
+    Operating System :: Microsoft :: Windows
+    Operating System :: POSIX
+    License :: OSI Approved :: Apache Software License  
+    Development Status :: 3 - Alpha
+
+[options]
+packages = aiohttp_cors
+python_requires = >=3.5.3
+install_requires =
+    aiohttp>=3.0
+    typing;python_version<'3.5'
+setup_requires =
+    # Environment markers were implemented and stabilized in setuptools
+    # v20.8.1 (see <http://stackoverflow.com/a/32643122/391865>).
+    setuptools>=20.8.1
+    # If line above doesn't work, check that you have at least
+    # setuptools v19.4 (released 2016-01-16):
+    # <https://github.com/pypa/setuptools/issues/141>
+
+tests_require =
+    pytest
+    pytest-cov
+    pytest-pylint
+    selenium
+    pytest_runner
+
 [aliases]
 test = pytest
 
 [tool:pytest]
-addopts= --cov=aiohttp_cors --cov-report=term --cov-report=html --cov-branch --no-cov-on-fail
\ No newline at end of file
+addopts= --cov=aiohttp_cors --cov-report=term --cov-report=html --cov-branch --no-cov-on-fail
diff --git a/setup.py b/setup.py
index ce7d69c..0091e9c 100644
--- a/setup.py
+++ b/setup.py
@@ -12,29 +12,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
+from pathlib import Path
 import sys
 from setuptools import setup
 
+import ast
+currentDir = Path(__file__).parent
 
-def read_file(filename):
-    abs_path = os.path.join(os.path.dirname(__file__), filename)
-    with open(abs_path, encoding="utf-8") as f:
-        return f.read()
+def extractMetaInfo(src):
+    info = {}
+    a=ast.parse(src)
+    for e in a.body:
+        if isinstance(e, ast.Assign) and isinstance(e.value, ast.Str):
+            info[e.targets[0].id] = e.value.s
+    return info
 
-
-about = {}
-exec(read_file(os.path.join("aiohttp_cors", "__about__.py")), about)
-
-needs_pytest = {'pytest', 'test'}.intersection(sys.argv)
-pytest_runner = ['pytest_runner'] if needs_pytest else []
-
-# aiohttp requires Python >= 3.4.1, so as aiohttp_cors.
-if sys.version_info[:3] < (3, 4, 1):
-    print("Error: aiohttp_cors requires Python interpreter version >= 3.4.1, "
-          "this interpreter has version '{}'".format(sys.version),
-          file=sys.stderr)
-    sys.exit(1)
+about = extractMetaInfo((currentDir / "aiohttp_cors" / "__about__.py").read_text())
 
 
 setup(
@@ -44,45 +37,5 @@ def read_file(filename):
     author_email=about["__email__"],
     description=about["__summary__"],
     url=about["__uri__"],
-    long_description="\n\n".join((
-        read_file("README.rst"),
-        read_file("CHANGES.rst"),
-    )),
-    packages=["aiohttp_cors"],
-    setup_requires=[
-        # Environment markers were implemented and stabilized in setuptools
-        # v20.8.1 (see <http://stackoverflow.com/a/32643122/391865>).
-        "setuptools>=20.8.1",
-        # If line above doesn't work, check that you have at least
-        # setuptools v19.4 (released 2016-01-16):
-        # <https://github.com/pypa/setuptools/issues/141>
-    ] + pytest_runner,
-    tests_require=[
-        "pytest",
-        "pytest-cov",
-        "pytest-pylint",
-        "selenium",
-    ],
-    test_suite="tests",
-    install_requires=[
-        "aiohttp>=1.1",
-        "typing;python_version<'3.5'",
-    ],
-    license=about["__license__"],
-    classifiers=[
-        "License :: OSI Approved :: Apache Software License",
-        "Intended Audience :: Developers",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
-        "Topic :: Software Development :: Libraries",
-        "Topic :: Internet :: WWW/HTTP",
-        "Framework :: AsyncIO",
-        "Operating System :: MacOS :: MacOS X",
-        "Operating System :: Microsoft :: Windows",
-        "Operating System :: POSIX",
-        "Development Status :: 3 - Alpha",
-    ],
+    long_description="\n\n".join(( (currentDir / sn).read_text() for sn in ("README.rst", "CHANGES.rst") )),
 )
diff --git a/tests/unit/test_cors_config.py b/tests/unit/test_cors_config.py
index 817410e..d494e20 100644
--- a/tests/unit/test_cors_config.py
+++ b/tests/unit/test_cors_config.py
@@ -103,7 +103,7 @@ def test_static_resource(app, cors):
         "/file", "/", name="dynamic_named_route")
     assert len(app.router.keys()) == 1
     for resource in list(app.router.resources()):
-        if issubclass(resource, web.StaticResource):
+        if isinstance(resource, web.StaticResource):
             cors.add(resource)
     assert len(app.router.keys()) == 1