Update supported python versions

Author: ayalash

.travis.yml

@@ -5,10 +5,10 @@ addons:
 before_script:
 - psql -c 'create database mailboxer;' -U postgres
 python:
-- '2.7'
-- '3.3'
-- '3.4'
-- '3.5'
+- '3.6'
+- '3.7'
+- '3.8'
+- '3.9'
 script:
 - make travis_test
 deploy:

setup.py

@@ -12,9 +12,10 @@
 
 setup(name="mailboxer-python",
       classifiers = [
-          "Programming Language :: Python :: 2.6",
-          "Programming Language :: Python :: 2.7",
-          "Programming Language :: Python :: 3.3",
+          "Programming Language :: Python :: 3.6",
+          "Programming Language :: Python :: 3.7",
+          "Programming Language :: Python :: 3.8",
+          "Programming Language :: Python :: 3.9",
           ],
       description="Client library for Mailboxer",
       license="BSD3",

tox.ini

@@ -1,6 +1,9 @@
 [tox]
-envlist = py26,py27,py33
+envlist = py36,py37,py38,py39
 
 [testenv]
-commands=python {toxinidir}/_test_build.py
-changedir = {toxinidir}
+commands =
+    python tests
+extras =
+    testing
+changedir = {toxinidir}