Restructure travis & tox configuration (#34)

Also removed useless python 3.7-dev build

.travis.yml

@@ -1,48 +1,25 @@
 language: python
 cache: pip
+
 python:
- - '2.7'
  - '3.4'
  - '3.5'
  - '3.6'
- - '3.7-dev'
 
 env:
- - DRF=3.7
-
-install:
- - pip install -r requirements/ci.txt
-
-before_script:
- - coverage erase
-
-script:
- - tox
-
-after_success:
- - codecov
-
-branches:
-  only:
-    - master
-    - /^release\/.*$/
-    - /^v?\d+\.\d+(\.\d+)?(-?\S+)?$/
-
-notifications:
-  email:
-    on_success: always
-    on_failure: always
+ - DRF=3.7 DJANGO=2.0
 
 jobs:
-  fast_finish: true
-
   include:
     - stage: test
+      python: '2.7'
+      env: DRF=3.7 DJANGO=1.11
+    -
       python: '3.5'
       env: TOXENV=docs
     -
       python: '2.7'
-      env: TOXENV=flake8
+      env: TOXENV=lint
     -
       python: '3.6'
       env: DRF=master
@@ -63,9 +40,34 @@ jobs:
   allow_failures:
     - env: TOXENV=flake8
     - env: DRF=master
-    - python: '3.7-dev'
+
+  fast_finish: true
+
+install:
+ - pip install -r requirements/ci.txt
+
+before_script:
+ - coverage erase
+
+script:
+ - tox
+
+after_success:
+ - codecov
+
+branches:
+  only:
+    - master
+    - /^release\/.*$/
+    - /^v?\d+\.\d+(\.\d+)?(-?\S+)?$/
 
 stages:
   - test
   - name: publish
     if: tag IS present
+
+
+notifications:
+  email:
+    on_success: always
+    on_failure: always

requirements/dev.txt

@@ -3,8 +3,5 @@ tox>=2.9.1
 tox-battery>=0.5
 detox>=0.11
 
-isort>=4.2
-flake8>=3.5.0
-flake8-isort>=2.3
-
+-r lint.txt
 -r setup.txt

requirements/lint.txt

@@ -0,0 +1,3 @@
+isort>=4.2
+flake8>=3.5.0
+flake8-isort>=2.3

tox.ini

@@ -1,26 +1,26 @@
 [tox]
 envlist =
-    py27-drf37,
-    py{34,35,36,37}-drf37,
+    py27-django111-drf37,
+    py{34,35,36}-django20-drf37,
     py36-drfmaster,
-    flake8, docs
+    lint, docs
 
 [travis:env]
 DRF =
     3.7: drf37
     master: drfmaster
+DJANGO =
+    1.11: django111
+    2.0: django20
 
 [testenv]
 deps =
+    django111: Django>=1.11,<2.0
+    django20: Django>=2.0,<2.1
+
     drf37: djangorestframework>=3.7.3,<3.8
 
-    # py27 is tested with Django <2.0 (Django 2.0 no longer supports python 2)
-    py27: Django>=1.11,<2.0
-
-    # main testing configurations
-    py{34,35,36,37}-drf37: Django>=1.11,<2.1
-
-    # py3 with the latest build of Django and django-rest-framework to get early warning of compatibility issues
+    # test with the latest build of Django and django-rest-framework to get early warning of compatibility issues
     drfmaster: https://github.com/encode/django-rest-framework/archive/master.tar.gz
     drfmaster: https://github.com/django/django/archive/master.tar.gz
 
@@ -35,11 +35,10 @@ commands =
 [testenv:py36-drfmaster]
 pip_pre = True
 
-[testenv:flake8]
+[testenv:lint]
 skip_install = true
 deps =
-    flake8
-    flake8-isort
+    -rrequirements/lint.txt
 commands =
     flake8 src/drf_yasg testproj tests setup.py