do not unit test for python 3.7

Author: timvink

.github/workflows/unittests.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix: 
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
+        python-version: [3.8, 3.9, "3.10", "3.11"]
     steps:
     - uses: actions/checkout@master
     - name: Setup Python ${{ matrix.python-version }}

setup.py

@@ -15,12 +15,11 @@
     author_email="[email protected]",
     license="MIT",
     include_package_data=True,
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     classifiers=[
         "Operating System :: OS Independent",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",