Bumping github actions python version to 3.8.

Advertise support for 3.8 in setup.py

Author: felddy

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Cache pip test requirements
         uses: actions/cache@v1
         with:
@@ -45,7 +45,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Cache pip test requirements
         uses: actions/cache@v1
         with:
@@ -75,7 +75,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Cache pip build requirements
         uses: actions/cache@v1
         with:

setup.py

@@ -61,6 +61,7 @@ def package_vars(version_file):
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
     ],
     python_requires=">=3.6",
     # What does your project relate to?