setup.py: make python3 a requirement (PEP440)

Williangalvani · patrickelectric · commit 245b86632574 · 2020-09-07T10:34:49.000-03:00
diff --git a/setup.py b/setup.py
@@ -11,6 +11,7 @@
 
 setup(name='bluerobotics-ping',
       version='0.1.0',
+      python_requires='>=3.4',
       description='A python module for the Blue Robotics ping-protocol and products',
       long_description=long_description,
       long_description_content_type='text/markdown',
