Django-spectator

Added

- Add a management command (`generate_letterboxd_export`) that generates a CSV file of movies seen, suitable for importing into a Letterboxd.com account.

Changed

- Update development project dependencies.
- Update included Bootstrap CSS from 4.5.3 to 4.6.0.

Added

- Add missing migrations

Changed

- Update python dependencies, including allowing django-debug-toolbar v3, frezegun up to v2, pillow up to v9.
- Update Mapbox GL for Venue maps from v1.6.1 to v2.0.0. See the [Mapbox GL Changelog](https://github.com/mapbox/mapbox-gl-js/blob/main/CHANGELOG.md).
- Update included Bootstrap CSS from 4.5.2 to 4.5.3.
- Change text "Publication Series" to "Series" in the `reading/includes/card_nav.html` template.
- Make counts in .nav-tabs consistently `<small>` in templates.

Added

- Allow usage of Factory Boy v3

Changed

- Move Bootstrap CSS files from `/static/css/` to `/static/spectator-core/css/`.

Added

- Add flake8 to tests.
- Allow usage of Django 3.1, Pillow 7.2, hashids 1.3.

Changed

- Upgrade included Bootstrap CSS from v4.4 to v4.5.

Removed

- Drop official support for python 3.5.

Changed

- Fix display of thumbnails in templates.