Add 3.7 to travis and make pypy allowed_failures (#1215)

* Add 3.7 to travis build matrix using workaround

See https://github.com/travis-ci/travis-ci/issues/9815 for workaround discussion

* Add 3.7 to pypi classifiers

* Format build matrix differently

* Try adding pypy6.0.0 to travis build matrix

* Add py3.7 to appveyor

* Try pypy 5.10.1 instead

6.0.0 isn't on travis yet: https://github.com/travis-ci/travis-ci/issues/9542

* pypy2-5.10.0 isn't on travis yet either...

* allow failures on travis pypy

.travis.yml

@@ -1,11 +1,18 @@
 language: python
-python:
+matrix:
-  - "2.7"
+  include:
-  - "3.4"
+    - python: 2.7
-  - "3.5"
+    - python: 3.4
-  - "3.6"
+    - python: 3.5
-  - "3.7-dev"
+    - python: 3.6
-  - "pypy-5.7.1"
+    - python: 3.7
+      dist: xenial
+      sudo: true
+    - python: pypy2.7-5.10.0
+    - python: pypy3.5-5.10.1
+  allow_failures:
+    - python: pypy2.7-5.10.0
+    - python: pypy3.5-5.10.1
 
 dist: trusty
 sudo: false

appveyor.yml

@@ -10,6 +10,7 @@ environment:
     - PYTHON: "C:\\Python34"
     - PYTHON: "C:\\Python35"
     - PYTHON: "C:\\Python36"
+    - PYTHON: "C:\\Python37"
 
 branches:
   only:

setup.py

@@ -56,4 +56,5 @@ with codecs.open('README.rst', 'r', 'utf-8') as fd:
               'Programming Language :: Python :: 3.4',
               'Programming Language :: Python :: 3.5',
               'Programming Language :: Python :: 3.6'
+              'Programming Language :: Python :: 3.7'
           ],)