* Bump rack-attack from 5.4.2 to 6.0.0

Bumps [rack-attack](https://github.com/kickstarter/rack-attack) from 5.4.2 to 6.0.0.
- [Release notes](https://github.com/kickstarter/rack-attack/releases)
- [Changelog](https://github.com/kickstarter/rack-attack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kickstarter/rack-attack/compare/v5.4.2...v6.0.0)

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

* fix payload[:request]

Bumps [scss_lint](https://github.com/sds/scss-lint) from 0.57.1 to 0.58.0.
- [Release notes](https://github.com/sds/scss-lint/releases)
- [Changelog](https://github.com/sds/scss-lint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sds/scss-lint/compare/v0.57.1...v0.58.0)

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

Bumps [bullet](https://github.com/flyerhzm/bullet) from 5.9.0 to 6.0.0.
- [Release notes](https://github.com/flyerhzm/bullet/releases)
- [Changelog](https://github.com/flyerhzm/bullet/blob/master/CHANGELOG.md)
- [Commits](https://github.com/flyerhzm/bullet/compare/5.9.0...6.0.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.67.2 to 0.68.0.
- [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/v0.67.2...v0.68.0)

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

* 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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.17.0 to 3.18.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.17.0...3.18.0)

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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.16.2 to 3.17.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.16.2...3.17.0)

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

Bumps [doorkeeper](https://github.com/doorkeeper-gem/doorkeeper) from 5.0.2 to 5.1.0.
- [Release notes](https://github.com/doorkeeper-gem/doorkeeper/releases)
- [Changelog](https://github.com/doorkeeper-gem/doorkeeper/blob/master/NEWS.md)
- [Commits](https://github.com/doorkeeper-gem/doorkeeper/compare/v5.0.2...v5.1.0)

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

Bumps [cld3](https://github.com/akihikodaki/cld3-ruby) from 3.2.3 to 3.2.4.
- [Release notes](https://github.com/akihikodaki/cld3-ruby/releases)
- [Commits](https://github.com/akihikodaki/cld3-ruby/compare/v3.2.3...v3.2.4)

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

Bumps [lograge](https://github.com/roidrage/lograge) from 0.10.0 to 0.11.0.
- [Release notes](https://github.com/roidrage/lograge/releases)
- [Changelog](https://github.com/roidrage/lograge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/roidrage/lograge/compare/v0.10.0...v0.11.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.66.0 to 0.67.1.
- [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/v0.66.0...v0.67.1)

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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.15.0 to 3.16.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.15.0...3.16.0)

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

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.35.0 to 1.36.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/v1.35.0...v1.36.0)

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

Bumps [rails](https://github.com/rails/rails) from 5.2.2.1 to 5.2.3.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](https://github.com/rails/rails/compare/v5.2.2.1...v5.2.3)

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

Bumps [devise](https://github.com/plataformatec/devise) from 4.5.0 to 4.6.2. **This update includes security fixes.**
- [Release notes](https://github.com/plataformatec/devise/releases)
- [Changelog](https://github.com/plataformatec/devise/blob/master/CHANGELOG.md)
- [Commits](https://github.com/plataformatec/devise/compare/v4.5.0...v4.6.2)

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

Bumps [tzinfo-data](https://github.com/tzinfo/tzinfo-data) from 1.2018.9 to 1.2019.1.
- [Release notes](https://github.com/tzinfo/tzinfo-data/releases)
- [Commits](https://github.com/tzinfo/tzinfo-data/compare/v1.2018.9...v1.2019.1)

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

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.34.0 to 1.35.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/v1.34.0...v1.35.0)

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

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.33.0 to 1.34.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/v1.33.0...v1.34.0)

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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.14.0 to 3.15.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.14.0...3.15.0)

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

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.32.0 to 1.33.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/v1.32.0...v1.33.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.65.0 to 0.66.0.
- [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/v0.65.0...v0.66.0)

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

Bumps [brakeman](https://github.com/presidentbeef/brakeman) from 4.4.0 to 4.5.0.
- [Release notes](https://github.com/presidentbeef/brakeman/releases)
- [Changelog](https://github.com/presidentbeef/brakeman/blob/master/CHANGES.md)
- [Commits](https://github.com/presidentbeef/brakeman/compare/v4.4.0...v4.5.0)

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

Bumps [webpacker](https://github.com/rails/webpacker) from 3.5.5 to 4.0.2.
- [Release notes](https://github.com/rails/webpacker/releases)
- [Changelog](https://github.com/rails/webpacker/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rails/webpacker/compare/v3.5.5...v4.0.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>
Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.31.0 to 1.32.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/1.31.0...v1.32.0)

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

Bumps [aws-sdk-s3](https://github.com/aws/aws-sdk-ruby) from 1.30.1 to 1.31.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-s3/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/1.30.1...1.31.0)

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

Bumps [active_record_query_trace](https://github.com/brunofacca/active-record-query-trace) from 1.5.4 to 1.6.
- [Release notes](https://github.com/brunofacca/active-record-query-trace/releases)
- [Changelog](https://github.com/brunofacca/active-record-query-trace/blob/v1.6/HISTORY.md)
- [Commits](https://github.com/brunofacca/active-record-query-trace/compare/v1.5.4...v1.6)

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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.13.2 to 3.14.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.13.2...3.14.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.64.0 to 0.65.0.
- [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/v0.64.0...v0.65.0)

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

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.6.0 to 2.7.1.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/master/Changelog.md)
- [Commits](https://github.com/bkeepers/dotenv/compare/v2.6.0...v2.7.1)

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

Bumps [pry-byebug](https://github.com/deivid-rodriguez/pry-byebug) from 3.6.0 to 3.7.0.
- [Release notes](https://github.com/deivid-rodriguez/pry-byebug/releases)
- [Changelog](https://github.com/deivid-rodriguez/pry-byebug/blob/master/CHANGELOG.md)
- [Commits](https://github.com/deivid-rodriguez/pry-byebug/compare/v3.6.0...v3.7.0)

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

Bumps [bootsnap](https://github.com/Shopify/bootsnap) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/Shopify/bootsnap/releases)
- [Changelog](https://github.com/Shopify/bootsnap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Shopify/bootsnap/compare/v1.3.2...v1.4.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.63.1 to 0.64.0.
- [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/v0.63.1...v0.64.0)

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

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 2.27.1 to 2.28.0.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Commits](https://github.com/grosser/parallel_tests/compare/v2.27.1...v2.28.0)

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

Bumps [microformats](https://github.com/microformats/microformats-ruby) from 4.0.7 to 4.1.0.
- [Release notes](https://github.com/microformats/microformats-ruby/releases)
- [Commits](https://github.com/microformats/microformats-ruby/compare/v4.0.7...v4.1.0)

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

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.12.0 to 3.13.2.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.12.0...3.13.2)

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

Bumps [addressable](https://github.com/sporkmonger/addressable) from 2.5.2 to 2.6.0.
- [Release notes](https://github.com/sporkmonger/addressable/releases)
- [Changelog](https://github.com/sporkmonger/addressable/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sporkmonger/addressable/compare/addressable-2.5.2...addressable-2.6.0)

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

Bumps [json-ld](https://github.com/ruby-rdf/json-ld) from 2.2.1 to 3.0.2.
- [Release notes](https://github.com/ruby-rdf/json-ld/releases)
- [Commits](https://github.com/ruby-rdf/json-ld/compare/2.2.1...3.0.2)

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

Bumps [brakeman](https://github.com/presidentbeef/brakeman) from 4.3.1 to 4.4.0.
- [Release notes](https://github.com/presidentbeef/brakeman/releases)
- [Changelog](https://github.com/presidentbeef/brakeman/blob/master/CHANGES.md)
- [Commits](https://github.com/presidentbeef/brakeman/compare/v4.3.1...v4.4.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.62.0 to 0.63.0.
- [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/v0.62.0...v0.63.0)

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

Bumps [sidekiq-unique-jobs](https://github.com/mhenrixon/sidekiq-unique-jobs) from 5.0.10 to 6.0.8.
- [Release notes](https://github.com/mhenrixon/sidekiq-unique-jobs/releases)
- [Changelog](https://github.com/mhenrixon/sidekiq-unique-jobs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mhenrixon/sidekiq-unique-jobs/compare/v5.0.10...v6.0.8)

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

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/master/Changelog.md)
- [Commits](https://github.com/bkeepers/dotenv/commits)

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

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.9.1 to 1.10.0.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sparklemotion/nokogiri/compare/v1.9.1...v1.10.0)

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

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.61.1 to 0.62.0.
- [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/v0.61.1...v0.62.0)

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

Bumps [httplog](https://github.com/trusche/httplog) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/trusche/httplog/releases)
- [Changelog](https://github.com/trusche/httplog/blob/master/CHANGELOG.md)
- [Commits](https://github.com/trusche/httplog/compare/v1.1.1...v1.2.0)

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

* Update config.yml

* Update Gemfile

* dropping ruby 2.3

2.3 EOL date: scheduled for 2019-03-31

* Updating docker containers

* Update Gemfile

Bumps [webmock](https://github.com/bblimke/webmock) from 3.4.2 to 3.5.1.
- [Release notes](https://github.com/bblimke/webmock/releases)
- [Changelog](https://github.com/bblimke/webmock/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bblimke/webmock/compare/v3.4.2...v3.5.1)

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

Bumps [cld3](https://github.com/akihikodaki/cld3-ruby) from 3.2.2 to 3.2.3.
- [Release notes](https://github.com/akihikodaki/cld3-ruby/releases)
- [Commits](https://github.com/akihikodaki/cld3-ruby/compare/v3.2.2...v3.2.3)

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

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.8.5 to 1.9.1.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sparklemotion/nokogiri/compare/v1.8.5...v1.9.1)

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

Bumps [omniauth](https://github.com/omniauth/omniauth) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/omniauth/omniauth/releases)
- [Commits](https://github.com/omniauth/omniauth/compare/v1.8.1...v1.9.0)

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