Release 0.88.1

What's Changed

Fixes

• Create series reservations as BEHALF instead of NORMAL by @matti-lamppu in #1492
• Add custom Storage to convert non-ASCII filenames to ASCII by @matti-lamppu in #1493
• Fix removing extra newlines in database migration by @ranta in #1494

Updates

• Split helsinki tunnistus and helsinki profile integrations by @matti-lamppu in #1487

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Full Changelog: v0.88.0...v0.88.1