Enable shell completion for configured command aliases

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## v0.0.16
+
+- Enable Bash, Zsh, and Fish completion for the configured command alias, such as `j`.
+- Update or remove generated alias completion files when the command alias changes.
+
 ## v0.0.15
 
 - Use `https://git.zb-server.de` for release download links and API requests instead of the runner's internal Gitea service URL.