Cleanup CI and add python 3.8 support

.appveyor.yml

@@ -5,4 +5,4 @@ install:
 build: off
 
 test_script:
-  - python -m tox -e py27,py34,py35,dogfood
+  - python -m tox -e py27,py36,py37,dogfood

.gitlab-ci.yml

@@ -39,8 +39,13 @@ python37:
   stage: test
   script: tox -e py37
 
+python38:
+  image: python:3.8
+  stage: test
+  script: tox -e py38
+
 linters:
-  image: python:3.6
+  image: python:3.7
   stage: test
   script: tox -e linters
 

.travis.yml

@@ -1,4 +1,3 @@
-dist: xenial
 language: python
 cache: pip
 before_script:
@@ -22,9 +21,11 @@ matrix:
       env: TOXENV=py36
     - python: 3.7
       env: TOXENV=py37
+    - python: 3.8
+      env: TOXENV=py38
     - python: pypy
       env: TOXENV=pypy
-    - python: 2.7
+    - python: 3.7
       env: TOXENV=readme
     - python: 3.7
       env: TOXENV=flake8

setup.cfg

@@ -27,6 +27,7 @@ classifiers =
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
     Topic :: Software Development :: Libraries :: Python Modules
     Topic :: Software Development :: Quality Assurance
 

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion=2.3.1
-envlist = py27,py34,py35,py36,py37,flake8,linters,docs
+envlist = py27,py34,py35,py36,py37,py38,flake8,linters,docs
 
 [testenv]
 deps =