- Add new 'Subscriptions' table on the subscriber list form that shows subs,
IP, and other data.
- Add new `meta` JSONB field to `subscriber_lsts` table.
Closes#1329.
- Adds support for arbitrary file uploads with an admin setting to select allowed file extensions.
- Adds support for attaching media (files) to campaigns.
- Add support for `complaint` to the SES bounce processor.
- Add support for `hard/soft` to Sendgrid bounce processor.
- Add new bounce actions `None` and `Unsubscribe`.
- Add per type (`soft/hard/complaint`) bounce rule configuration to
admin settings UI.
- Refactor Cypress bounce tests.
- Introduces a new option on the settings UI to optionally publish the full campaign body in
public archive RSS feeds.
Closes#1033
Co-authored-by: Kailash Nadh <kailash@nadh.in>
