Fixes pyca#868 -- test on py38 (pyca#870)

Author: alex

.travis.yml

@@ -29,6 +29,8 @@ matrix:
     env: TOXENV=py36
   - python: "3.7"
     env: TOXENV=py37
+  - python: "3.8"
+    env: TOXENV=py38
   - python: "pypy2.7-5.10.0"
     env: TOXENV=pypy
   - python: "pypy3.5-5.10.1"
@@ -45,6 +47,8 @@ matrix:
     env: TOXENV=py36-cryptographyMaster
   - python: "3.7"
     env: TOXENV=py37-cryptographyMaster
+  - python: "3.8"
+    env: TOXENV=py38-cryptographyMaster
   - python: "pypy2.7-5.10.0"
     env: TOXENV=pypy-cryptographyMaster
   - python: "pypy3.5-5.10.1"
@@ -61,6 +65,8 @@ matrix:
     env: TOXENV=py36-cryptographyMinimum
   - python: "3.7"
     env: TOXENV=py37-cryptographyMinimum
+  - python: "3.8"
+    env: TOXENV=py38-cryptographyMinimum
   - python: "pypy2.7-5.10.0"
     env: TOXENV=pypy-cryptographyMinimum
   - python: "pypy3.5-5.10.1"
@@ -100,6 +106,7 @@ matrix:
   - env: TOXENV=py35-cryptographyMaster
   - env: TOXENV=py36-cryptographyMaster
   - env: TOXENV=py37-cryptographyMaster
+  - env: TOXENV=py38-cryptographyMaster
   - env: TOXENV=pypy-cryptographyMaster
   - env: TOXENV=pypy3-cryptographyMaster
 

setup.py

@@ -81,6 +81,7 @@ def find_meta(meta):
             'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',
+            'Programming Language :: Python :: 3.8',
 
             'Programming Language :: Python :: Implementation :: CPython',
             'Programming Language :: Python :: Implementation :: PyPy',

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = {pypy,pypy3,py27,py34,py35,py36,py37}{,-cryptographyMaster,-cryptographyMinimum}{,-randomorder},py27-twistedMaster,pypi-readme,check-manifest,flake8,docs,coverage-report
+envlist = {pypy,pypy3,py27,py34,py35,py36,py37,py38}{,-cryptographyMaster,-cryptographyMinimum}{,-randomorder},py27-twistedMaster,pypi-readme,check-manifest,flake8,docs,coverage-report
 
 [testenv]
 whitelist_externals =