Done via the following command:
git diff fcd5dd25 --stat --name-only | xargs sed -i '/Pleroma Authors/c# Copyright © 2017-2020 Pleroma Authors <https:\/\/pleroma.social\/>'

Done via the following command:
git diff 1e6c102b --stat --name-only | cat - | xargs sed -i 's/2017-2018 Pleroma Authors/2017-2019 Pleroma Authors/'

When multiple requests are processed by rate limiter plug at the same
time and the bucket is not yet initialized, both would try to initialize
the bucket resulting in an internal server error.

Admin API: Exclude boosts from `GET /api/pleroma/admin/users/:nickname/statuses` and `GET /api/pleroma/admin/instance/:instance/statuses`

Admin API: `GET /api/pleroma/admin/statuses` - list all statuses (accepts `godmode` and `local_only`)

Closes #1082

[#1505] Restricted max thread distance for fetching replies on incoming federation (in addition to reply-to depth restriction).

site_name allow to spoof the origin of the domain and so hacks like:

<!-- served on https://hacktivis.me/tmp/joinmastodon.org.html -->
<meta property="og:image" content="https://hacktivis.me/datalove/img/meme/pleroma/mastodon%2C%20forbidden%20amuse%20yourself.jpeg" />
<meta property="og:title" content="Mastodon: Forbidden Amuse Yourself" />
<meta property="og:site_name" content="joinmastodon.org" />
<meta http-equiv="refresh" content="0; url=http://joinmastodon.org/">

Tweaks to `clear_config` calls in tests in order to prevent side effects on config during test suite execution.

The setting is now simply "attachment_links" and the boolean value does
what you expect. A double negative is never possible and describing the
functionality is no longer a philospher's worst nightmare.

This reverts merge request !2194

[#1505] Improved replies-handling tests: updated Mastodon message fixture, used exact Pleroma federation message.

[#1505] Removed wrapping of reply URIs into `first` element, added comments to transmogrifier tests.

[#1505] Added tests, changelog entry, tweaked config settings related to replies output on outgoing federation.