Add FUNDING.yml and drop python3.6

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: wemake-services

.github/workflows/test.yml

@@ -57,8 +57,6 @@ jobs:
         include:
           - python-version: '3.7'
             django-version: '2.2'
-          - python-version: '3.6'
-            django-version: '2.2'
     steps:
       - uses: actions/checkout@v2
       - name: Setup system dependencies

setup.py

@@ -42,7 +42,7 @@ setup(
     author="Maksim Kurnikov",
     author_email="maxim.kurnikov@gmail.com",
     py_modules=[],
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     install_requires=dependencies,
     packages=["django-stubs", *find_packages(exclude=["scripts"])],
     package_data={