Release v0.5.0

What's Changed

This is mostly a maintenance release, that also rebuilds the package with Python 3.14 support.

• add bits related to conda-forge package: badge, links, Github Actions and unpin mamba-version from all GHA flows by @valeriupredoi in #278
• Lint code in activestorage/ and add flake8 test at push by @valeriupredoi in #281
• re-add version in activestorage/__init__.py for Readthedocs by @valeriupredoi in #282
• Remove bnl and old_code directories by @valeriupredoi in #283
• Support Python 3.14 by @valeriupredoi in #293

Thanks to @davidhassell and @bnlawrence for their reviews 🍻

Full Changelog: v0.4.0...v0.5.0