Merge pull request #2 from aaltay/patch-1

Relax upper bound for futures dependency

Author: lowaa

setup.py

@@ -19,7 +19,7 @@
  long_description = f.read()
 
 install_requires = [
- 'futures==3.2.0',
+ 'futures>=3.2.0,<4.0.0',
 ] if sys.version_info <= (3, 2) else []
 
 setup(