Add tox file, update requirements

Author: Cito

.gitignore

@@ -9,6 +9,13 @@
 *.pyo
 *.swp
 
-Thumbs.db
+build
+dist
 
 .idea
+.tox
+.pytest_cache
+
+MANIFEST
+
+Thumbs.db

.travis.yml

@@ -6,7 +6,6 @@ language: python
 python:
   - "2.6"
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
   - "3.6"

setup.py

@@ -2,10 +2,10 @@
 
 from sys import version_info
 
-__version__ = '1.2'
+__version__ = '1.3'
 
 py_version = version_info[:2]
-if py_version < (2, 6):
+if not (2, 6) <= py_version <= (2, 7) or py_version >= (3, 4):
     raise ImportError('Python %d.%d is not supported by DBUtils.' % py_version)
 
 import warnings
@@ -32,13 +32,10 @@
         'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.0',
-        'Programming Language :: Python :: 3.1',
-        'Programming Language :: Python :: 3.2',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Topic :: Database',
         'Topic :: Internet :: WWW/HTTP :: Dynamic Content',
         'Topic :: Software Development :: Libraries :: Python Modules'

tox.ini

@@ -0,0 +1,21 @@
+[tox]
+envlist = py{26,27,34,35,36,37}, flake8
+
+[pytest]
+python_files=Test*.py
+
+[testenv]
+setenv =
+    PYTHONPATH = {toxinidir}
+deps =
+    pytest
+commands =
+    pytest
+
+[testenv:flake8]
+basepython =
+    python
+deps =
+    flake8
+commands =
+    flake8 DBUtils