Fix flake8 errors and ignore error E501

Author: martinRenou

.travis.yml

@@ -25,4 +25,4 @@ install:
   - pip install -e .
   - if [[ $TRAVIS_OS_NAME == linux && $PYTHON_VERSION != 2.7 ]]; then jupyter labextension install .; fi
 script:
-  - flake8 ipycanvas
+  - flake8 ipycanvas --ignore=E501

ipycanvas/binary.py

@@ -1,10 +1,4 @@
 """Binary module."""
-
-try:
-    from io import BytesIO as StringIO  # python3
-except:
-    from StringIO import StringIO  # python2
-
 import numpy as np
 
 

ipycanvas/nbextension/__init__.py

@@ -4,6 +4,7 @@
 # Copyright (c) Martin Renou
 # Distributed under the terms of the Modified BSD License.
 
+
 def _jupyter_nbextension_paths():
     return [{
         'section': 'notebook',