Update PyPI classifiers

Author: jgosmann

setup.py

@@ -10,7 +10,8 @@
     raise ImportError(
         "'setuptools' is required but not installed. To install it, "
         "follow the instructions at "
-        "https://pip.pypa.io/en/stable/installing/#installing-with-get-pip-py")
+        "https://pip.pypa.io/en/stable/installing/#installing-with-get-pip-py"
+    )
 
 
 def read(*filenames, **kwargs):
@@ -25,7 +26,8 @@ def read(*filenames, **kwargs):
 
 root = os.path.dirname(os.path.realpath(__file__))
 version_module = imp.load_source(
-    "version", os.path.join(root, "nengo_spa", "version.py"))
+    "version", os.path.join(root, "nengo_spa", "version.py")
+)
 testing = "test" in sys.argv or "pytest" in sys.argv
 
 docs_require = [
@@ -34,16 +36,14 @@ def read(*filenames, **kwargs):
     "nbsphinx",
     "nengo_sphinx_theme",
 ]
-optional_requires = [
-    "scipy"
-]
+optional_requires = ["scipy"]
 tests_require = [
     "jupyter",
     "matplotlib>=2.0",
     "nbformat",
     "pytest>=4.0,<5",
     "pytest-plt",
-    "pytest-rng"
+    "pytest-rng",
 ]
 
 setup(
@@ -55,35 +55,29 @@ def read(*filenames, **kwargs):
     packages=find_packages(exclude=["*.tests"]),
     scripts=[],
     license="Free for non-commercial use",
-    description="An implementation of the Semantic Pointer Architecture for "
-                "Nengo",
+    description="An implementation of the Semantic Pointer Architecture for " "Nengo",
     long_description=read("README.rst", "CHANGES.rst"),
     zip_safe=True,
     include_package_data=True,
-    setup_requires=["pytest-runner"] if testing else [] + [
-        "numpy>=1.8",
-    ],
-    install_requires = [
-        "nengo>=2.7,<4",
-        "numpy>=1.8",
-    ],
-    extras_require = {
+    setup_requires=["pytest-runner"] if testing else [] + ["numpy>=1.8",],
+    install_requires=["nengo>=2.7,<4", "numpy>=1.8",],
+    extras_require={
         "all": docs_require + optional_requires + tests_require,
         "docs": docs_require,
         "optional": optional_requires,
-        "tests": tests_require
+        "tests": tests_require,
     },
     tests_require=tests_require,
-    entry_points={
-    },
+    entry_points={},
     classifiers=[  # https://pypi.python.org/pypi?%3Aaction=list_classifiers
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Science/Research",
         "License :: Free for non-commercial use",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Scientific/Engineering :: Artificial Intelligence",
     ],
 )