Use version attr for version
MODIFY
setup.cfg
setup.cfg
[metadata]
name = PlexTraktSync
-version = 0.13.x
+version = attr: plex_trakt_sync.__version__
description = Plex-Trakt-Sync is a two-way-sync between trakt.tv and Plex Media Server
long_description = file: README.md
long_description_content_type = text/markdown

Use version attr for version