Update test matrix

Author: SmileyChris

setup.cfg

@@ -15,15 +15,12 @@ classifiers =
     License :: OSI Approved :: MIT License
     Natural Language :: English
     Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.6
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.3
-    Programming Language :: Python :: 3.4
-    Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
 
 [options]
 zip_safe = False
@@ -94,4 +91,4 @@ omit =
 [coverage:report]
 exclude_lines =
     pragma: no cover
-    @abstract
+    @abstract

tests/conftest.py

@@ -2,7 +2,5 @@
 
 if sys.version_info > (3,):
     collect_ignore = ["test_django_channels.py"]
-    if sys.version_info < (3, 6):
-        collect_ignore.append("test_gevent.py")
 else:
     collect_ignore = ["test_aiohttp.py", "test_base_async.py"]

tox.ini

@@ -1,15 +1,15 @@
 [tox]
-envlist = 
+envlist =
     coverage_setup
-    py27, py35, py36, py37, py38, flake8
+    py27, py36, py37, py38, py39, flake8
     coverage_report
 
 [travis]
 python =
-    3.8: py38, flake8
+    3.9: py39, flake8
+    3.8: py38
     3.7: py37
     3.6: py36
-    3.5: py35
     2.7: py27
 
 [testenv]
@@ -33,4 +33,4 @@ commands =
   coverage html
   coverage xml
   coverage report --include="tests/*" --fail-under=100 -m
-  coverage report --omit="tests/*"  # --fail-under=90 -m
+  coverage report --omit="tests/*"  # --fail-under=90 -m