0.15.0

• Add Python 3.14 support.
• Add Django 6.0 support.
• Drop Django 4.0 and Django 4.1 support. (#220)
• Extract field types into a SettingType enum importable from settings. (by @gregory-goodman in #229)
• Fix Setting.get caching caller-supplied default values. #217 (#218)
• Fix HIGH level code scanning alerts (path injection + DOM XSS). (#221)
• Replace deprecated formfield_callback with field_classes.
• Pin GitHub Actions to SHA, fix permissions and add "OpenSSF Scorecard" workflow. (#219)
• Bump requirements.
• Bump pre-commit hooks.