don't try to build binary wheels for Python 2.6

Author: beniwohli

setup.py

@@ -172,7 +172,6 @@ def run_tests(self):
         'Operating System :: OS Independent',
         'Topic :: Software Development',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',

travis/build_manylinux_wheels.sh

@@ -7,6 +7,9 @@ export OPBEAT_WRAPT_EXTENSIONS="true"
 
 # Compile wheels
 for PYBIN in /opt/python/*/bin; do
+    if [[ $PYBIN == *cp26* ]]; then
+        continue
+    fi
     ${PYBIN}/pip install -r /io/test_requirements/requirements-base.txt
     ${PYBIN}/pip install -r /io/test_requirements/requirements-python-$($PYBIN/python -c "import sys; print(sys.version_info[0])").txt
     ${PYBIN}/pip wheel /io/ -w wheelhouse/