As pointed out by https://github.com/mastodon/mastodon/pull/21297#discussion_r1028372193
at least one of our dependencies already dropped support for Ruby 2.6, and we
had removed Ruby 2.6 tests from the CI over a year ago (#16861).

So stop advertising Ruby 2.6 support, bump targeted version, and drop some
compatibility code.

* Fix style for hashes

Make the style for hashes consistent.

* New style

More consistency

* Add customizable user roles

* Various fixes and improvements

* Add migration for old settings and fix tootctl role management

- Add rake task for generating Apple/Android icons and favicons from SVG
- Add rake task for generating PNG icons and logos for e-mails from SVG
- Remove obsolete Microsoft icons and configuration
- Remove PWA shortcut icons

* Format JSON and YAML using Prettier

* Add prettier to devDep

* Update fix-duplicates task to 2022_02_10_153119

Also add support for Appeal to AccountMerging#merge_with!

* Update fix-duplicates task to 2022_03_07_094650

* Update fix-duplicates task to 2022_03_09_213005

* Update fix-duplicates task to 2022_03_07_083603

* Update fix-duplicates task to 2022_03_10_060626

* Update fix-duplicates script to 2022_03_07_083603

* Update fix-duplicates task to 2022_03_10_060706

* Update fix-duplicates task to 2022_03_10_060959

* Silence CodeClimate

* Add trending statuses

* Fix dangling items with stale scores in localized sets

* Various fixes and improvements

- Change approve_all/reject_all to approve_accounts/reject_accounts
- Change Trends::Query methods to not mutate the original query
- Change Trends::Query#skip to offset
- Change follow recommendations to be refreshed in a transaction

* Add tests for trending statuses filtering behaviour

* Fix not applying filtering scope in controller

* disable NewCops

* update TargetRubyVersion

* Fix Lint/MissingSuper for ActiveModelSerializers::Model

* Fix Lint/MissingSuper for feed

* Fix Lint/FloatComparison

* Do not use instance variables

* Bump rubocop from 0.86.0 to 0.88.0

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.86.0 to 0.88.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop/compare/v0.86.0...v0.88.0)

Signed-off-by: dependabot[bot] <support@github.com>

* Fix for latest RuboCop

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

* Fix rubocop warning

* use limit variable

* use ContextCreatingMethods option

* Revert "Revert #10957 (rubocop-rails) which is incompatible with CodeClimate (#10965)"

This reverts commit 121d19d7fa.

* Disable Rails/HelperInstanceVariable

Fix #10305

* Move more tasks to tootctl

- tootctl feeds build
- tootctl feeds clear
- tootctl accounts refresh

Clean up exit codes and help messages

* Move user modifying to tootctl

* Improve user modification through CLI, rename commands

add -> create
mod -> modify
del -> delete

To remove ambiguity

* Fix code style issues

* Fix not being able to unset admin/mod role

* rubocop: quit being so picky

* rubocop: miscellany

* rubocop: prefer present to blank

Adopted from GitLab CE. Generate new migration with:

    rails g post_deployment_migration name_of_migration_here

By default they are run together with db:migrate. To not run them,
the env variable SKIP_POST_DEPLOYMENT_MIGRATIONS must be set

Code by Yorick Peterse <yorickpeterse@gmail.com>, see also:

83c8241160

* fix RuboCop error

RuboCop doesn't work by following error.

```
$ rubocop
Error: The `Style/TrailingCommaInLiteral` cop no longer exists. Please use `Style/TrailingCommaInArrayLiteral` and/or `Style/TrailingCommaInHashLiteral` instead.
(obsolete configuration found in .rubocop.yml, please update it)
```

it comes from RuboCop 0.53.0 [\[Fix #3394\] Separate Array & Hash Literal Comma configuration by garettarrowood · Pull Request #5307 · bbatsov/rubocop](https://github.com/bbatsov/rubocop/pull/5307)

* ci(CodeClimate): specify RuboCop version 0.54

 * https://docs.codeclimate.com/docs/rubocop#section-using-rubocop-s-newer-versions
 * [RuboCop 0.55.0 is not available yet](https://github.com/codeclimate/codeclimate-rubocop/issues/121) on CodeClimate rubocop channel

* Add handling of Linked Data Signatures in payloads

* Add a way to sign JSON, fix canonicalization of signature options

* Fix signatureValue encoding, send out signed JSON when distributing

* Add missing security context

08f8de84eb/Gemfile.lock (L38)
Code Climate is using RuboCop v0.46.0.

Change several rules to maintain compatibility.

* Update renamed rubocop configuration options

* Remove duplicate rubocop configuration, sort options

There are many spots throughout the codebase which are showing as covered by
specs in the simplecov output -- but which are not actually run, because they
are on the same line as a guard clause.

I plan on fixing some of these issues, but don't want to keep triggering this
rubocop style violation.

My preference would be that we use the PR review process to identify places
where a guard clause might be appropriate, but that we leave this cop turned off
by default.

* disable Bundler/OrderedGems

* fix rubocop Lint/UselessAssignment

* fix rubocop Style/BlockDelimiters

* fix rubocop Style/AlignHash

* fix rubocop Style/AlignParameters, Style/EachWithObject

* fix rubocop Style/SpaceInLambdaLiteral

* downgrade rubocop 0.48.1 => 0.46.0

* exclude vendor/**/* from rubocop target files

* add frozen_string_literal comment line

* fix percent literal delimited by ( and )

* fix alignment

* remove comment disabling unknown cop

application website validation, don't link to app website if website isn't set,
also comment out animated boost icon from #464 until it's consistent with non-animated version

to the API