Idr-gallery

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- The `omero-gallery` repository was forked to `idr-gallery` [1](https://github.com/IDR/idr-gallery/pull/1)
- New front page [2](https://github.com/IDR/idr-gallery/pull/2)

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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

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- Update EuroBioimaging logo in alternate version of the UI in use on IDR

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- Drop support for Python 2
- Fix thumbnails on Python 3 (50)
- Migration to Python 3 (47)