Remove 3.7 unit tests

This doesn't work with Python 3.7, so we're starting at 3.8...

.github/workflows/main.yaml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ 3.7, 3.8, 3.9 ]
+        python-version: [ 3.8, 3.9 ]
 
     steps:
     - uses: actions/checkout@v2

.github/workflows/pypi-publish.yaml

@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2
       with:
-        python-version: 3.7
+        python-version: 3.8
 
     - name: Install dependencies
       run: |

ChangeLog

@@ -1,6 +1,7 @@
 CHANGES
 =======
 
+* Add github actions for unit test and update
 * Update test cases to reflect rdflib 5.0 differences
 * Fix issue 12
 * bit 'o cleanup'

setup.py

@@ -1,8 +1,13 @@
 #!/usr/bin/env python
+import sys
+from logging import warn
 
 from setuptools import setup
 
+if sys.version_info < (3, 8, 0):
+    warn(f"FunOwl needs python 3.8 or later.  Current version: {sys.version_info}")
+
 setup(
     setup_requires=['pbr'],
     pbr=True,
-)
+)

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37 py38 py39
+envlist = py38 py39
 
 [testenv]
 deps=unittest2