Python 3.7 release

- add Python 3.8 dev tests as failure allowed
- Python 3.7 tests are no longer allowed to fail

.travis.yml

@@ -6,7 +6,8 @@ python:
   - 3.4
   - 3.5
   - 3.6
-  - 3.7-dev
+  - 3.7
+  - 3.8-dev
   - nightly
   - pypy
 env:
@@ -16,13 +17,13 @@ matrix:
   fast_finish: true
   allow_failures:
   - os:  osx
-  - python: 3.7-dev
+  - python: 3.8-dev
   - python: nightly
   - python: pypy
   include:
-    - python: 3.6
+    - python: 3.7
       env: TOXENV=docs
-    - python: 3.6
+    - python: 3.7
       env: TOXENV=fix-lint
     - os: osx
       language: generic

appveyor.yml

@@ -5,6 +5,7 @@ environment:
     - TOXENV: py34
     - TOXENV: py35
     - TOXENV: py36
+    - TOXENV: py37
 
 matrix:
   fast_finish: true

tox.ini

@@ -3,6 +3,7 @@ envlist = py27,
           py34,
           py35,
           py36,
+          py37,
           pypy,
           coverage,
           fix-lint,
@@ -22,15 +23,15 @@ commands = pytest {posargs:--cov="{envsitepackagesdir}/tox" --cov-config="{toxin
 
 [testenv:docs]
 description = invoke sphinx-build to build the HTML docs and check that all links are valid
-basepython = python3.6
+basepython = python3.7
 extras = docs
 changedir = {toxinidir}
 commands = sphinx-build -d "{toxworkdir}/docs_doctree" doc "{toxworkdir}/docs_out" --color -W -bhtml {posargs}
            python -c 'print("documentation available under file://{toxworkdir}/docs_out/index.html")'
 
 [testenv:fix-lint]
 description = format the code base to adhere to our styles, and complain about what we cannot do automatically
-basepython = python3.6
+basepython = python3.7
 passenv = {[testenv]passenv}
           HOMEPATH
           # without PROGRAMDATA cloning using git for Windows will fail with an
@@ -71,11 +72,11 @@ commands = codecov --file "{toxworkdir}/coverage.xml"
 [testenv:exit_code]
 # to see how the InvocationError is displayed, use
 # PYTHONPATH=.:$PYTHONPATH python3 -m tox -e exit_code
-basepython = python3.6
+basepython = python3.7
 description = commands with several exit codes
 skip_install = True
 changedir = {toxinidir}
-commands = python3.6 -c "import sys; sys.exit(139)"
+commands = python3.7 -c "import sys; sys.exit(139)"
 
 [testenv:pra]
 platform = linux
@@ -95,7 +96,7 @@ description = generate a DEV environment
 extras = testing, docs
 # required to make looponfail reload on every source code change
 usedevelop = True
-basepython = python3.6
+basepython = python3.7
 changedir = {toxinidir}
 commands = python -m pip list --format=columns
            python -c 'import sys; print(sys.executable)'