Merge pull request #3 from scop/test-37-to-39

Test with Python 3.7, 3.8, and 3.9

Author: fucm

.travis.yml

@@ -8,7 +8,9 @@ python:
   - "3.4"
   - "3.5"
   - "3.6"
-  #- "3.7"
+  - "3.7"
+  - "3.8"
+  - "3.9-dev"
 
 install:
    - pip install tox-travis

tox.ini

@@ -4,7 +4,7 @@
 # directory.
 
 [tox]
-envlist = py34,py35,py36,py37,flake8,pylint,refactory
+envlist = py34,py35,py36,py37,py38,py39,flake8,pylint,refactory
 skip_missing_interpreters = true
 
 [testenv]
@@ -17,7 +17,7 @@ setenv =
 commands =
     pytest
 
-[testenv:py36]
+[testenv:py38]
 deps = 
     pytest
     pytest-cov
@@ -65,7 +65,10 @@ commands =
 python =
     3.4: py34
     3.5: py35
-    3.6: py36, flake8, pylint, coverage
+    3.6: py36
+    3.7: py37
+    3.8: py38, flake8, pylint, coverage
+    3.9-dev: py39
 
 # .coveragerc to control coverage.py
 [report]