Fix #7940

* Bump version to 2.8.3

* Bump version to 2.8.4

* Record account suspend/silence time and keep track of domain blocks

* Also unblock users who were suspended/silenced before dates were recorded

* Add tests

* Keep track of suspending date for users suspended through the CLI

* Show accurate number of accounts that would be affected by unsuspending an instance

* Change migration to set silenced_at and suspended_at

* Revert "Also unblock users who were suspended/silenced before dates were recorded"

This reverts commit a015c65d2d.

* Switch from using suspended and silenced to suspended_at and silenced_at

* Add post-deployment migration script to remove `suspended` and `silenced` columns

* Use Account#silence! and Account#suspend! instead of updating the underlying property

* Add silenced_at and suspended_at migration to post-migration

* Change account fabricator to translate suspended and silenced attributes

* Minor fixes

* Make unblocking domains always retroactive

* Remove custom emojis on domains purge

* Change message "Removing" to "Removed"

Add `--approve` option to `tootctl accounts modify`

* Add blurhash

* Use fallback color for spoiler when blurhash missing

* Federate the blurhash and accept it as long as it's at most 5x5

* Display unknown media attachments as blurhash placeholders

* Improve style of embed actions and spoiler button

* Change blurhash resolution from 3x3 to 4x4

* Improve dependency definitions

* Fix code style issues

* config: Add GITHUB_REPOSITORY for repository name

* config: Add SOURCE_BASE_URL for repository url

* Show source_url and repository name on getting started

* Add `tootctl accounts reset`

* Rename reset to reset-relationships

* Improve command description

Fix #10441

* List the actual accounts that would have been culled during a dry run.

Otherwise, the dry run mode is basically useless.

* Prevent unreachable domains from inheriting the previous status code.

* Update CHANGELOG.md for #10460.

Update AUTHORS.md
Update CHANGELOG.md

Fix #10305

Fix #6856
Fix #6951

Query by @tateisu

Fix #1554

Add `rake repo:changelog` to do that automatically

Fix #9817

Fix #9369