python_requires and python 3.8 support

Author: s-m-e

setup.py

@@ -47,10 +47,12 @@
 
 
 # List all versions of Python which are supported
+python_minor_min = 5
+python_minor_max = 8
 confirmed_python_versions = [
-	('Programming Language :: Python :: %s' % x)
-	for x in '3.5 3.6 3.7'.split(' ')
-	]
+    'Programming Language :: Python :: 3.{MINOR:d}'.format(MINOR = minor)
+    for minor in range(python_minor_min, python_minor_max + 1)
+    ]
 
 
 # Fetch readme file
@@ -98,6 +100,7 @@
 	license = 'Apache License 2.0',
 	keywords = ['filesystem', 'fuse', 'logging', 'monitoring'],
 	include_package_data = True,
+	python_requires = '>=3.{MINOR:d}'.format(MINOR = python_minor_min),
 	install_requires = [
 		'click>=7.0',
 		'refuse==0.0.5',