Update travis CI python versions

Author: espdev

.travis.yml

@@ -6,12 +6,16 @@ matrix:
     - python: "3.6"
       env: TOXENV=py36-pytest
     - python: "3.7"
-      env: TOXENV=py37-pytest-coverage
+      env: TOXENV=py37-pytest
     - python: "3.8"
       env: TOXENV=py38-pytest
-    - python: "3.7"
+    - python: "3.9"
+      env: TOXENV=py39-pytest
+    - python: "3.10"
+      env: TOXENV=py310-pytest-coverage
+    - python: "3.10"
       env: TOXENV=flake8
-    - python: "3.7"
+    - python: "3.10"
       env: TOXENV=docs
 
 install:

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{36,37,38}-pytest-coverage, docs, flake8
+envlist = py{36,37,38,39,310}-pytest-coverage, docs, flake8
 skipsdist = True
 
 [testenv]