Omero-gallery

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- Make app compatible with Django 4.0.x [110](https://github.com/ome/omero-gallery/pull/110)

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- Fix search regression introduced in 3.4.1 [96](https://github.com/ome/omero-gallery/pull/96)

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- Make app compatible with Django 1.11.x and 3.2.x [93](https://github.com/ome/omero-gallery/pull/93)

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- Fix 2-column layout for a single category [74](https://github.com/ome/omero-gallery/pull/74)
- Filter studies by Group [75](https://github.com/ome/omero-gallery/pull/75)
- Clear searches button [77](https://github.com/ome/omero-gallery/pull/77)
- Default UI uses configured viewer [83](https://github.com/ome/omero-gallery/pull/83)
- Add release process to README [69](https://github.com/ome/omero-gallery/pull/69)

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- CSS fix for mobile (68)

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- Update IDR copyright date