Drop explicit support for python 3.6 as it is end of life, add 3.10

Author: timvink

.github/workflows/unittests.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix: 
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9, "3.10"]
     steps:
     - uses: actions/checkout@master
     - name: Setup Python  

.github/workflows/unittests_codecov.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix: 
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9, "3.10"]
     steps:
     - uses: actions/checkout@master
     - name: Setup Python ${{ matrix.python-version }}

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name="mkdocs-git-authors-plugin",
-    version="0.6.2",
+    version="0.6.3",
     description="Mkdocs plugin to display git authors of a page",
     long_description=long_description,
     long_description_content_type="text/markdown",
@@ -19,10 +19,10 @@
         "Operating System :: OS Independent",
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3 :: Only',
         "License :: OSI Approved :: MIT License",
         'Topic :: Documentation',