to work around https://github.com/AFPy/pospell/issues/30

fix subject UUID migration

See merge request !2086

fix setting Appointment.reminded

See merge request !2079

downgrade eslint to 7.x.x

See merge request !2083

update changelog for 0.67.0

See merge request !2082

eslint 8 is not compatible with nodejs 10 which is the only version
available in ubuntu 20.04 LTS

This is a short term workaround.

replace django-ical

See merge request !2078

to better integrate with generic views

Refactor logging

See merge request !2077

use UUID instead of ID in legal guardian form

See merge request !2074

Translations

See merge request !2076

subject creation request UI

See merge request !2060

to prevent subject enumeration

fix legal representative pane

See merge request !2075

update dependencies

See merge request !2073

relevant changelogs:

-   https://docs.djangoproject.com/en/dev/releases/3.2.8/
-   https://github.com/Julian/jsonschema/blob/main/CHANGELOG.rst#v400
-   https://github.com/collective/icalendar/blob/master/CHANGES.rst#409-2021-10-16
-   https://github.com/fullcalendar/fullcalendar/releases/tag/v5.10.0

Use uuid field for subject uuid

See merge request !2072

see https://stackoverflow.com/questions/35139818/django-postgresql-varchar-to-uuid