removed python 3 support due to remaining py3 bugs

Author: oena

.travis.yml

@@ -3,9 +3,6 @@ language: python
 # python versioning 
 python:
   - 2.7
-  - 3.4
-  - 3.5
-  - 3.6
 
 # requirements
 install: 

setup.cfg

@@ -1,3 +1,3 @@
 [bdist_wheel]
-# Only Python 2.7 supported; some versions of Python 3 support as well 
-universal=1
+# Only Python 2.7 supported 
+universal=0

setup.py

@@ -12,7 +12,7 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='2.2.0',
+    version='3.0.0',
 
     description='Assorted tools for interacting with .gct, .gctx files and other Connectivity Map (Broad Institute) data/tools',
     long_description="cmapPy: Tools for interacting with .gctx and .gct files, and other Connectivity Map resources. See our documentation at http://cmappy.readthedocs.io/en/latest/, and for more information on the file formats and available resources, please see clue.io/gctx.",
@@ -45,11 +45,7 @@
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 2.7'
     ],
 
     # What does your project relate to?