fix for setup.py

Author: nschloe

setup.py

@@ -7,7 +7,7 @@
 # https://packaging.python.org/single_source_version/
 base_dir = os.path.abspath(os.path.dirname(__file__))
 about = {}
-with open(os.path.join(base_dir, 'matplotlib2tikz', '__about__.py')) as f:
+with open(os.path.join(base_dir, 'matplotlib2tikz', '__about__.py'), 'rb') as f:
     exec(f.read(), about)