drop 2.6 and 3.3 support.

Author: cjw296

.travis.yml

@@ -7,7 +7,6 @@ python:
   - "3.6"
   - "3.5"
   - "3.4"
-  - "3.3"
   - "2.7"
 
 # command to install dependencies

README.md

@@ -13,7 +13,7 @@ Please read this before using this library: https://groups.google.com/d/msg/pyth
 
 **Licence**: BSD-style (see licences.py)
 
-**Versions of Python supported**: 2.6, 2.7, 3.3+.
+**Versions of Python supported**: 2.7, 3.4+.
 
 **External modules required**:
 

setup.py

@@ -27,7 +27,7 @@
     long_description = (
         "Extract data from Excel spreadsheets "
         "(.xls and .xlsx, versions 2.0 onwards) on any platform. "
-        "Pure Python (2.6, 2.7, 3.3+). "
+        "Pure Python (2.7, 3.4+). "
         "Strong support for Excel dates. Unicode-aware."
     ),
     platforms = ["Any platform -- don't need Windows"],
@@ -41,7 +41,6 @@
             'Programming Language :: Python :: 2',
             'Programming Language :: Python :: 2.7',
             'Programming Language :: Python :: 3',
-            'Programming Language :: Python :: 3.3',
             'Programming Language :: Python :: 3.4',
             'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: 3.6',