Fix default dist filename for release task

not sure why this fix was needed, did setuptools behavior change?

and stop declaring explicit support for python 3.5, that makes no sense

setup.cfg

@@ -17,7 +17,6 @@ classifiers =
         Natural Language :: English
         Operating System :: OS Independent
         Programming Language :: Python :: 3
-        Programming Language :: Python :: 3.5
         Topic :: System :: Systems Administration
         Topic :: Software Development :: Libraries :: Python Modules
 

tasks.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2020 Lance Edgar
+#  Copyright © 2010-2024 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -24,8 +24,6 @@
 Tasks for rattail-fabric2
 """
 
-from __future__ import unicode_literals, absolute_import
-
 import os
 import shutil
 
@@ -46,4 +44,4 @@ def release(c):
     # TODO: what i esp. don't like is, this doesn't consider .gitignore
     c.run("find . -name '*~' -delete")
     c.run('python setup.py sdist --formats=gztar')
-    c.run('twine upload dist/rattail-fabric2-{}.tar.gz'.format(__version__))
+    c.run(f'twine upload dist/rattail_fabric2-{__version__}.tar.gz')