Update supported python versions
Technically we support 3.4 until one more minor version, but
I'm only doing this so that our badge on the README will read
correctly, so jumping the gun a little should be fine.
@@ -195,8 +195,6 @@ setup_kwargs = dict(
"Topic :: Software Development",
"Programming Language :: Python",
"Programming Language :: Python :: 2.7",
- "Programming Language :: Python :: 3.3",
- "Programming Language :: Python :: 3.4",
"Programming Language :: Python :: 3.5",
"Programming Language :: Python :: 3.6",
"Programming Language :: Python :: 3.7",
