Conflicts:
- `app/javascript/mastodon/features/compose/components/poll_form.js`:
Upstream bumped poll option character limit, but we already had
a higher one, kept ours.
- `app/validators/poll_validator.rb`:
Upstream bumped poll option character limit, but we already had
a higher one, kept ours.
- `config/initializers/content_security_policy.rb`:
Upstream added a rule, the way we compute ours is different, but
that added rule has been ported.
- `package.json`:
No real conflict, dependency update. Performed the same update.
- `yarn.lock`:
No real conflict, dependency update. Performed the same update.
Also:
- Fix locks not being removed when jobs go to the dead job queue
- Add UI for managing locks to the Sidekiq dashboard
- Remove unused Sidekiq workers
Fix#13349
Conflicts:
- `README.md`:
Our README.md files are completely different. Discarded upstream changes.
- `app/javascript/core/admin.js`:
Updating rails-ujs, no real conflict, but a comment to close to changed
code. Various glitch-soc-only files have been updated to match those changes,
though.
- `package.json`:
No real conflict, just an additional dependency in glitch-soc that was too
close to something updated upstream. Took upstream's changes.
Conflicts:
- `app/controllers/api/v1/statuses_controller.rb`:
Conflict due to upstream adding a new parameter (with_rate_limit),
too close to glitch-soc's own additional parameter (content_type).
Added upstream's parameter.
- `app/services/post_status_service.rb`:
Conflict due to upstream adding a new parameter (rate_limit),
too close to glitch-soc's own additional parameter (content_type).
Added upstream's parameter.
- `app/views/settings/preferences/appearance/show.html.haml`:
Conflict due to us not exposing theme settings here (as we have
a different flavour/skin menu).
Took upstream change, while still not exposing theme settings.
- `config/webpack/shared.js`:
Coding style fixes for a part we have rewritten.
Discarded upstream changes.
Conflicts:
- `app/serializers/rest/account_serializer.rb`:
Upstream added code too close to glitch-soc-specific followers-hiding code.
Ported upstream changes.
* Add announcements
Fix#11006
* Add reactions to announcements
* Add admin UI for announcements
* Add unit tests
* Fix issues
- Add `with_dismissed` param to announcements API
- Fix end date not being formatted when time range is given
- Fix announcement delete causing reactions to send streaming updates
- Fix announcements container growing too wide and mascot too small
- Fix `all_day` being settable when no time range is given
- Change text "Update" to "Announcement"
* Fix scheduler unpublishing announcements before they are due
* Fix filter params not being passed to announcements filter
Allow browsing and filtering all relationships instead of just
followers, unify the codebase with the user-facing relationship
manager, add ability to see who the user invited
Conflicts:
- `app/javascript/packs/public.js`:
Upstream removed an unused function in code that has
been refactored a bit. Removed that function in the corresponding
places.
* Fix unused role routes being generated
* Remove unused JavaScript code
* Refactor filters code to be DRYer
* Fix `.count == 0` comparisons to `.empty?` in views
* Fix filters in views
* Add backend support for bookmarks
Bookmarks behave like favourites, except they aren't shared with other
users and do not have an associated counter.
* Add spec for bookmark endpoints
* Add front-end support for bookmarks
* Introduce OAuth scopes for bookmarks
* Add bookmarks to archive takeout
* Fix migration
* Coding style fixes
* Fix rebase issue
* Update bookmarked_statuses to latest UI changes
* Update bookmark actions to properly reflect status changes in state
* Add bookmarks item to single-column layout
* Make active bookmarks red
* Add nodeinfo endpoint
* dont commit stuff from my local dev
* consistant naming since we implimented 2.1 schema
* Add some additional node info stuff
* Add nodeinfo endpoint
* dont commit stuff from my local dev
* consistant naming since we implimented 2.1 schema
* expanding this to include federation info
* codeclimate feedback
* CC feedback
* using activeserializers seems like a good idea...
* get rid of draft 2.1 version
* Reimplement 2.1, also fix metaData -> metadata
* Fix metaData -> metadata here too
* Fix nodeinfo 2.1 tests
* Implement cache for monthly user aggregate
* Useless
* Remove ostatus from the list of supported protocols
* Fix nodeinfo's open_registration reading obsolete setting variable
* Only serialize domain blocks with user-facing limitations
* Do not needlessly list noop severity in nodeinfo
* Only serialize domain blocks info in nodeinfo when they are set to be displayed to everyone
* Enable caching for nodeinfo endpoints
* Fix rendering nodeinfo
* CodeClimate fixes
* Please CodeClimate
* Change InstancePresenter#active_user_count_months for clarity
* Refactor NodeInfoSerializer#metadata
* Remove nodeinfo 2.1 support as the schema doesn't exist
* Clean-up
Conflicts:
- Gemfile
- app/controllers/api/v1/search_controller.rb
Conflict because we changed the number of default results to be
configurable
- app/lib/settings/scoped_settings.rb
Addition of a new “noindex” site-wide setting,
conflict due to our change of the two other site-wide settings
(default flavour and skin instead of theme)
- spec/controllers/application_controller_spec.rb
Addition of a new “noindex” site-wide setting,
conflict due to our change of the two other site-wide settings
(default flavour and skin instead of theme)
Conflicts:
- app/views/directories/index.html.haml
Upstream has redesigned the profile directory, and we
had a glitch-soc-specific change to hide follower counts.
Ported that change to the new design.
* Add automatic blocklist display in /about/blocks
Inspired by https://github.com/Gargron/mastodon.social-misc
* Add admin option to set who can see instance blocks
* Normalize locales files
* Rename “Sandbox” to “Silence” for consistency
* Disable /about/blocks when in whitelist mode
* Optionally display rationale for domain blocks
* Only display domain blocks that have user-facing limitations, and order them
* Redesign table of blocked domains to better handle long domain names and rationales
* Change domain blocks ordering now that rationales aren't displayed right away
* Only show explanation for block severities actually in use
* Reword instance block explanations and add disclaimer for public fetch mode
* Add database columns for adding notes to domain blocks/restrctions
* Add admin UI to set private and public comments when blocking a domain
* Add text for private and public comments on domain blocks
* Show domain block comments in admin UI
* Add comments to the domain block undo page
* Make UnblockDomainService more robust regarding upgraded domain blocks
* Allow editing domain blocks
* Rename button from “undo domain block” to “view domain block” in account admin UI
* Change test to unsilence silenced users from upgraded blocks
Fix#271
Add back the `GET /api/v1/trends` API with the caveat that it does
not return tags that have not been allowed to trend by the staff.
When a hashtag begins to trend (internally) and that hashtag has
not been previously reviewed by the staff, the staff is notified.
The new admin UI for hashtags allows filtering hashtags by where
they are used (e.g. in the profile directory), whether they have
been reviewed or are pending reviewal, they show by how many people
the hashtag is used in the directory, how many people used it
today, how many statuses with it have been created today, and it
allows fixing the name of the hashtag to make it more readable.
The disallowed hashtags feature has been reworked. It is now
controlled from the admin UI for hashtags instead of from
the file `config/settings.yml`
Allow access to account settings, 2FA, authorized applications, and
account deletions to unconfirmed and pending users, as well as
users who had their accounts disabled. Suspended users cannot update
their e-mail or password or delete their account.
Display account status on account settings page, for example, when
an account is frozen, limited, unconfirmed or pending review.
After sign up, login users straight away and show a simple page that
tells them the status of their account with links to account settings
and logout, to reduce onboarding friction and allow users to correct
wrongly typed e-mail addresses.
Move the final sign-up step of SSO integrations to be the same
as above to reduce code duplication.
* Add support for an instance actor
* Skip username validation for local Application accounts
* Add migration script to create instance actor
* Make Codeclimate happy
* Switch to id -99 for instance actor
* Remove unused `icon` and `image` attributes from instance actor
* Use if/elsif/else instead of return + ternary operator
* Add instance actor to fresh installs
* Use instance actor as instance representative
Use instance actor for forwarding reports, relay operations, and spam
auto-reporting.
* Seed database in test environment
* Fix single-user mode
* Fix tests
* Fix specs to accomodate for an extra `Account`
* Auto-reject follows on instance actor
Following an instance actor might make sense, but we are not handling that
right now, so auto-reject.
* Fix webfinger lookup and serialization for instance actor
* Rename instance actor
* Make it clear in the HTML view that the instance actor should not be blocked
* Raise cache time for instance actor as there's no dynamic content
* Re-use /about/more with a flash message for instance actor profile
* Remove Salmon and PubSubHubbub endpoints
* Add error when trying to follow OStatus accounts
* Fix new accounts not being created in ResolveAccountService
Conflicts:
- app/models/media_attachment.rb
Upstream added audio attachment support
- app/serializers/initial_state_serializer.rb
Upstream added audio attachment support and how mimetypes are returned
- app/serializers/rest/instance_serializer.rb
Upstream added a few fields
- config/application.rb
Upstream added a different paperclip transcoder
Conflicts:
- app/views/admin/pending_accounts/index.html.haml
No real conflict, upstream changes too close to glitch-specific
theming system changes.
- config/navigation.rb
Upstream redesigned the settings navigation, took those changes
and re-inserted the flavours menu.
Conflicts:
- config/locales/en.yml
Conflict caused by the glitch-soc-specific “flavour” string being too close
to the newly introduced “identity_proofs” string. Just included both.
* create account_identity_proofs table
* add endpoint for keybase to check local proofs
* add async task to update validity and liveness of proofs from keybase
* first pass keybase proof CRUD
* second pass keybase proof creation
* clean up proof list and add badges
* add avatar url to keybase api
* Always highlight the “Identity Proofs” navigation item when interacting with proofs.
* Update translations.
* Add profile URL.
* Reorder proofs.
* Add proofs to bio.
* Update settings/identity_proofs front-end.
* Use `link_to`.
* Only encode query params if they exist.
URLs without params had a trailing `?`.
* Only show live proofs.
* change valid to active in proof list and update liveness before displaying
* minor fixes
* add keybase config at well-known path
* extremely naive feature flagging off the identity proof UI
* fixes for rubocop
* make identity proofs page resilient to potential keybase issues
* normalize i18n
* tweaks for brakeman
* remove two unused translations
* cleanup and add more localizations
* make keybase_contacts an admin setting
* fix ExternalProofService my_domain
* use Addressable::URI in identity proofs
* use active model serializer for keybase proof config
* more cleanup of keybase proof config
* rename proof is_valid and is_live to proof_valid and proof_live
* cleanup
* assorted tweaks for more robust communication with keybase
* Clean up
* Small fixes
* Display verified identity identically to verified links
* Clean up unused CSS
* Add caching for Keybase avatar URLs
* Remove keybase_contacts setting
Conflicts:
- app/controllers/settings/follower_domains_controller.rb
Removed upstream. Did the same here. Maybe we should not have?
- config/locales/en.yml
Upstream removed the “Authorized followers” page and associated
translations. This is too close in the file to our glitch-soc-specific
“flavour” string. No actual conflict.
- config/locales/ja.yml
Same as above.
- config/locales/pl.yml
Same as above.
- config/navigation.rb
No real conflict. New route added too close to the glitch-soc-specific
“flavours” one.
- config/webpack/configuration.js
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
- config/webpack/loaders/babel.js
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
The contents of this file have been moved to package.json.
- config/webpack/shared.js
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
- config/webpacker.yml
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
- jest.config.js
The contents of this file have been moved to package.json.
- package.json
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
- yarn.lock
Upstream refactored the webpack(er) configuration quite a bit.
Tried to keep up.
* Add polls
Fix#1629
* Add tests
* Fixes
* Change API for creating polls
* Use name instead of content for votes
* Remove poll validation for remote polls
* Add polls to public pages
* When updating the poll, update options just in case they were changed
* Fix public pages showing both poll and other media
Conflicts:
- app/controllers/oauth/authorized_applications_controller.rb
Two changes too close to each other
- app/controllers/settings/sessions_controller.rb
- app/lib/user_settings_decorator.rb
Two changes too close to each other
- app/models/media_attachment.rb
New changes too close to glitch-soc only changes.
- app/models/user.rb
Two changes too close to each other.
- app/services/remove_status_service.rb
Kept direct timeline code which had been removed upstream.
- app/views/settings/preferences/show.html.haml
Two changes too close to each other.
- config/locales/en.yml
Introduction of a new string too close to glitch-soc-only's “flavour”
- config/locales/ja.yml
Introduction of a new string too close to glitch-soc-only's “flavour”
- config/locales/pl.yml
Introduction of a new string too close to glitch-soc-only's “flavour”
- config/locales/simple_form.en.yml
Introduction of a new string too close to glitch-soc-only's “skin”
- config/locales/simple_form.pl.yml
Introduction of a new string too close to glitch-soc-only's “skin”
- config/settings.yml
Reverted upstream's decision of enabling posting application by default.
* Add hashtag filter to profiles
GET /@:username/tagged/:hashtag
GET /api/v1/accounts/:id/statuses?tagged=:hashtag
* Display featured hashtags on public profile
* Use separate model for featured tags
* Update featured hashtag counters on-write
* Limit featured tags to 10
Conflicts:
- .eslintrc.yml
Removed, as upstream removed it.
- app/controllers/admin/statuses_controller.rb
Minor code cleanup when porting one of our features.
- app/models/account.rb
Note length validation has changed upstream.
We now use upstream's validation (dropped legacy glitch-soc
account metadata stuff) but with configurable limit.
- app/services/post_status_service.rb
Upstream has added support for scheduled toots, refactoring
the code a bit. Adapted our changes to this refactoring.
- app/views/stream_entries/_detailed_status.html.haml
Not a real conflict, changes too close.
- app/views/stream_entries/_simple_status.html.haml
Not a real conflict, changes too close.
* Allow to show a specific status in the admin interface
* Let the front-end know the current account is a moderator
* Add admin links to status and account menus
If the current logged-in user is an admin, add quick links to the admin
interface in account and toot dropdown menu. Suggestion by @ashkitten
* Use @statuses.first instead of @statuses[0]
* Add local followers page to admin account UI
For moderation, I often find myself wondering who, locally, is following
a remote user. Currently, to see this, I have to go back to the web UI,
paste in their full handle, click their profile, and go to the
"Followers" tab (plus, this information is incidental, and if mastodon
ever decides to resolve all of the follower information, there will be
no place local followers are shown). This PR adds a new page which is
accessible via the "following" count on the admin's account view
page, which shows the local followers. (It has filter parameters for
account location to indicate that only local followers are shown, and
leave room for expansion if mastodon ever decides to store the entire
remote follow list).
* Normalize en.yml
* Add REST API for creating an account
The method is available to apps with a token obtained via the client
credentials grant. It creates a user and account records, as well as
an access token for the app that initiated the request. The user is
unconfirmed, and an e-mail is sent as usual.
The method returns the access token, which the app should save for
later. The REST API is not available to users with unconfirmed
accounts, so the app must be smart to wait for the user to click a
link in their e-mail inbox.
The method is rate-limited by IP to 5 requests per 30 minutes.
* Redirect users back to app from confirmation if they were created with an app
* Add tests
* Return 403 on the method if registrations are not open
* Require agreement param to be true in the API when creating an account
* Add moderation warnings
Replace individual routes for disabling, silencing, and suspending
a user, as well as the report update route, with a unified account
action controller that allows you to select an action (none,
disable, silence, suspend) as well as whether it should generate an
e-mail notification with optional custom text. That notification,
with the optional custom text, is saved as a warning.
Additionally, there are warning presets you can configure to save
time when performing the above.
* Use Account#local_username_and_domain
Conflicts:
- app/controllers/admin/base_controller.rb
Some refactoring made upstream, no real conflict.
- app/javascript/mastodon/features/compose/components/compose_form.js
Updated using upstream's code but using maxChars instead of the
hardcoded length of 500 characters per toot.
- app/javascript/styles/mastodon/components.scss
Upstream redesigned the onboarding modal. Not sure why we had a
conflict there.
Conflicts:
- .github/ISSUE_TEMPLATE/bug_report.md
Took our version.
- CONTRIBUTING.md
Updated the embedded copy of upstream's version.
- README.md
Took our version.
- app/policies/status_policy.rb
Not a real conflict, took code from both.
- app/views/layouts/embedded.html.haml
Added upstream's changes (dns-prefetch) and fixed
`%body.embed`
- app/views/settings/preferences/show.html.haml
Reverted some of upstream changes, as we have a
page dedicated for flavours and skins.
- config/initializers/content_security_policy.rb
Kept our version of the CSP.
- config/initializers/doorkeeper.rb
Not a real conflict, took code from both.
* Add conversations API
* Add web UI for conversations
* Add test for conversations API
* Add tests for ConversationAccount
* Improve web UI
* Rename ConversationAccount to AccountConversation
* Remove conversations on block and mute
* Change last_status_id to be a denormalization of status_ids
* Add optimistic locking
* Allow min_id pagination in Feed#get
* Add min_id pagination to home and list timeline APIs
* Add min_id pagination to account statuses, public and tag APIs
* Remove unused stub in reports API
* Use min_id pagination in notifications, favourites, and fix order
* Fix HomeFeed#from_database not using paginate_by_id
Conflicts:
.circleci/config.yml
app/controllers/authorize_follows_controller.rb
app/javascript/packs/public.js
Moved new stuff from packs/public.js to core/public.js.
Added appropriate use_pack in new controllers.
* Add remote interaction dialog for toots
* Change AuthorizeFollow into AuthorizeInteraction, support statuses
* Update brakeman.ignore
* Adjust how interaction buttons are display on public pages
* Fix tests
Conflicts:
app/controllers/accounts_controller.rb
app/javascript/mastodon/locales/pl.json
app/views/about/more.html.haml
Conflicts in `accounts_controller.rb` resolved by taking upstream's
version + our `use_pack`.
Conflicts in `pl.json` resolved by taking upstream's changes.
Conflicts in `aboute/more.html.haml` resolved by taking upstream's changes.
Conflicts:
Dockerfile
app/javascript/packs/common.js
config/webpack/loaders/sass.js
config/webpack/shared.js
db/schema.rb
package.json
yarn.lock
A lot of the conflicts come from updating webpack.
Even though upstream deleted app/javascript/packs/common.js, I kept
glitch-soc's version as it unifies JS/CSS packs behavior across flavours.
Ported glitch changes to webpack 4.x
Completely remove glitch-soc's Keyword Mutes, migrate
existing database records to CustomFilters.
Handling of client-side filters is still not implemented
in the glitch-soc front-end.
Conflicts:
README.md
app/controllers/statuses_controller.rb
app/lib/feed_manager.rb
config/navigation.rb
spec/lib/feed_manager_spec.rb
Conflicts were resolved by taking both versions for each change.
This means the two filter systems (glitch-soc's keyword mutes and tootsuite's
custom filters) are in place, which will be changed in a follow-up commit.
DELETE /api/v1/suggestions/:account_id
When blocking, remove suggestion from both sides. Muting not affected,
since muting is supposed to be invisible to the target.
* Re-add follow recommendations API
GET /api/v1/suggestions
Removed in 8efa081f21 due to Neo4J
dependency. The algorithm uses triadic closures, takes into account
suspensions, blocks, mutes, domain blocks, excludes locked and moved
accounts, and prefers more recently updated accounts.
* Track interactions with people you don't follow
Replying to, favouriting and reblogging someone you're not following
will make them show up in follow recommendations. The interactions
have different weights:
- Replying is 1
- Favouriting is 10 (decidedly positive interaction, but private)
- Reblogging is 20
Following them, muting or blocking will remove them from the list,
obviously.
* Remove triadic closures, ensure potential friendships are trimmed
* Add keyword filtering
GET|POST /api/v1/filters
GET|PUT|DELETE /api/v1/filters/:id
- Irreversible filters can drop toots from home or notifications
- Other filters can hide toots through the client app
- Filters use a phrase valid in particular contexts, expiration
* Make sure expired filters don't get applied client-side
* Add missing API methods
* Remove "regex filter" from column settings
* Add tests
* Add test for FeedManager
* Add CustomFilter test
* Add UI for managing filters
* Add streaming API event to allow syncing filters
* Fix tests
* Track trending tags
- Half-life of 1 day
- Historical usage in daily buckets (last 7 days stored)
- GET /api/v1/trends
Fix#271
* Add trends to web UI
* Don't render compose form on search route, adjust search results header
* Disqualify tag from trends if it's in disallowed hashtags setting
* Count distinct accounts using tag, ignore silenced accounts
- POST /api/v1/push/subscription
- PUT /api/v1/push/subscription
- DELETE /api/v1/push/subscription
- New OAuth scope: "push" (required for the above methods)
* Added a timeline for Direct statuses
* Lists all Direct statuses you've sent and received
* Displayed in Getting Started
* Streaming server support for direct TL
* Changes to match other timelines in 2.0
* Admin: Show unconfirmed email address on account page
* Admin: Allow staff to change user email addresses
* ActionLog: On change_email, log current email address and new unconfirmed email address
Conflicts:
app/serializers/initial_state_serializer.rb
The glitch flavour isn't yet pulling custom emoji data on its own (see
https://github.com/tootsuite/mastodon/pull/7047). Once that gets into
the glitch flavour, we can eliminate the custom_emojis load.
* Fix follow/unfollow buttons on public profile
- Present non-logged users with web+mastodon:// URLs for remote accounts
- Present logged-in users with appropriate links (authorize_follows and
remote_unfollows) for remote accounts
* Do not cache rendered cards if user is logged in
* Implement Assignment of Reports (#6967)
* Change translation of admin.report.comment.label to "Report Comment" for clarity
As we'll soon add the ability for reports to have comments on them, this clarification makes sense.
* Implement notes for Reports
This enables moderators to leave comments about a report whilst they work on it
* Fix display of report moderation notes
* Allow reports to be reopened / marked as unresolved
* Redirect to reports listing upon resolution of report
* Implement "resolve with note" functionality
* Add inverse relationship for report notes
* Remove additional database querying when loading report notes
* Fix tests for reports
* Fix localisations for report notes / reports
* Fix#201: Account archive download
* Export actor and private key in the archive
* Optimize BackupService
- Add conversation to cached associations of status, because
somehow it was forgotten and is source of N+1 queries
- Explicitly call GC between batches of records being fetched
(Model class allocations are the worst offender)
- Stream media files into the tar in 1MB chunks
(Do not allocate media file (up to 8MB) as string into memory)
- Use #bytesize instead of #size to calculate file size for JSON
(Fix FileOverflow error)
- Segment media into subfolders by status ID because apparently
GIF-to-MP4 media are all named "media.mp4" for some reason
* Keep uniquely generated filename in Paperclip::GifTranscoder
* Ensure dumped files do not overwrite each other by maintaing directory partitions
* Give tar archives a good name
* Add scheduler to remove week-old backups
* Fix code style issue
* Add GET /api/v1/instance/peers API to reveal known domains
* Add GET /api/v1/instance/activity API
* Make new APIs disableable, exclude private statuses from activity stats
* Fix code style issue
* Fix week timestamps
* Add consumable invites
* Add UI for generating invite codes
* Add tests
* Display max uses and expiration in invites table, delete invite
* Remove unused column and redundant validator
- Default follows not used, probably bad idea
- InviteCodeValidator is redundant because RegistrationsController
checks invite code validity
* Add admin setting to disable invites
* Add admin UI for invites, configurable role for invite creation
- Admin UI that lists everyone's invites, always available
- Admin setting min_invite_role to control who can invite people
- Non-admin invite UI only visible if users are allowed to
* Do not remove invites from database, expire them instantly
* Add structure for lists
* Add list timeline streaming API
* Add list APIs, bind list-account relation to follow relation
* Add API for adding/removing accounts from lists
* Add pagination to lists API
* Add pagination to list accounts API
* Adjust scopes for new APIs
- Creating and modifying lists merely requires "write" scope
- Fetching information about lists merely requires "read" scope
* Add test for wrong user context on list timeline
* Clean up tests
* Add moderator role and add pundit policies for admin actions
* Add rake task for turning user into mod and revoking it again
* Fix handling of unauthorized exception
* Deliver new report e-mails to staff, not just admins
* Add promote/demote to admin UI, hide some actions conditionally
* Fix unused i18n
This should eventually be accessible via the API and the web frontend,
but I find it easier to set up an editing interface using Rails
templates and the like. We can always take it out if it turns out we
don't need it.
* Fix#117 - Add ability to specify alternative text for media attachments
- POST /api/v1/media accepts `description` straight away
- PUT /api/v1/media/:id to update `description` (only for unattached ones)
- Serialized as `name` of Document object in ActivityPub
- Uploads form adjusted for better performance and description input
* Add tests
* Change undo button blend mode to difference
Thibaut Girka