Add support for Python 3.10 (#1511)

* change to 3.10 proper in strategy matrix

* add 3.10 to trove classifers list

Author: joshuadavidthomas

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10.0-rc.1']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
 
     services:
       mariadb:
@@ -76,7 +76,7 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10.0-rc.1']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
 
     services:
       postgres:
@@ -143,7 +143,7 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10.0-rc.1']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
 
     steps:
     - uses: actions/checkout@v2

setup.cfg

@@ -27,6 +27,7 @@ classifiers =
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Topic :: Software Development :: Libraries :: Python Modules
 
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