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Release version 2.7.1

Bug fixes:
* Rendering of `<hlcode>` elements (broken in 2.7.0) works again.
* Abstentions for grid questions have been fixed.
* A JavaScript `TypeError` caused by fullscreen mode in some modern
  browsers has been fixed.

Release version 2.7.0

Features:
* Users can now delete their own account through the settings panel.
* Admins can now delete any account or session through the settings panel.

Improvements:
* CSV Export: A settings panel has been added. Semicolon and tab can be used
  as separator. An Excel-specific header can be added to improve compatibilty.
* The ability to set custom icons for authentication services via backend
  configuration has been restored.
* Export/import functionality is no longer disabled for iOS.

Bug fixes:
* The flip animation for flashcards has been disabled to fix rendering issues in
  some browsers.
* CSV export now works for flashcards.
* Cloning of sessions from the public pool has been fixed.

Known issues:
* CSV import is not supported for flashcards.

Release version 2.6.1

Improvements:
* The web font is now included so modern browsers should no longer fall
  back to alternatives.

Changes for developers:
* Web fonts can now be downloaded with the new Grunt `font` task. It is
  automatically executed as part of `build` and `run` tasks.

Release version 2.6.0

Improvements:
* Guest authentication is now retained when logging in and will be
  restored after logging out.
* Questions and slides are now automatically released for answers/
  comments after creation.
* Forms for question creation/editing no longer show settings irrelevant
  for the question type.
* The solution can now be shown for free text questions.
* The statistics button now appears immediately after answering free
  text questions.

Changes:
* Switched from serif font to sans-serif font.

Bug fixes:
* The correct answer is no longer revealed by order for yes/no questions
  imported from CSV.
* Pressing <ENTER> in the question's submit field when editing no longer
  reloads the web app.

Removed features:
* Import and export for arsnova.cards and arsnova.click formats has been
  removed.

Known issues:
* CSV import/export does not work for flashcards.

Release version 2.5.3

Browser compatibility:
* Added a workaround to circumvent a bug in Chrome 65 and 66. This
  browser bug causes serious navigation issues.

Bug fixes:
* Updated session MotDs can now be saved.

Release version 2.5.2

Minor improvements:
* Slightly adjusted badge colors to be more consistent
* Correctly show/hide items in legend based on existing data and
  selected use case

Bug fixes:
* Fix logout failing when application cache is unaccessable
* Username for non-guests is now removed from configuration on logout

Release version 2.5.1

* Direct session login via link or QR Code now works reliably.
* MotDs are now listed and created for the correct session when MotDs
  for another session were managed before.

Release version 2.5.0

Major features:
* Evaluation of free text answers
* The flashcards UI has been overhauled. They are now handled separately
  from questions.
* Question duplication and import from other sessions

Minor features and changes:
* The number of comments is now shown in presentation mode
* New use case including only comments
* Export of answer statistics to CSV format
* Export of questions to arsnova.click format
* Export/import of flashcards to/from arsnova.cards format
* Proxy support for WebSocket connections
* Reduced the amount of API requests sent
* Usability improvements and bug fixes

With this release we have completely overhauled our
[documentation](README.md). Additionally, we now provide
[Docker images](https://github.com/thm-projects/arsnova-docker/).

Release version 2.4.5

Bug fixes:
* Fixed button visibility problems in Chrome 57+.
* Fixed skipping of login service selection (if only one is enabled for
  the role).
* Fixed activation toggling of votes for all preparation questions.

Release version 2.4.4

Bug fixes:
* Fix layout problems in Firefox 49+

Release version 2.3.4

Bug fixes:
* Fix layout problems in Firefox 49+
* ARSnova no longer hangs because of a `ReferenceError` when loading for
  the first time on slow connections.

Release version 2.4.3

Bug fixes:
* Buttons of the question format bar are now correctly shown or hidden
  when switching use cases.
* Flipping of flashcards is no longer inhibited.

Release version 2.4.2

Bug fixes:
* Fixed a JavaScript `TypeError` which occured when presenting questions
  with enabled slides feature and required a reload to make ARSnova
  usable again.
* Button descriptions now adjust correctly when slides are enabled.
* ARSnova no longer hangs because of a `ReferenceError` when loading for
  the first time on slow connections.

Release version 2.4.1

Bug fixes:
* Theme variable `tabbar-button-icon-color` works again.

Release version 2.4.0

Major features:
* Slides: A new content format without any answer options has been
  added.
* Interactive keynote: A new use case including the 'slides' format has
  been added. It replaces the 'All-inclusive' use case.

Minor features and changes:
* An overlay showing count of new student's questions and average
  feedback has been added to presentation mode.
* Student's questions and comments are now directly displayed instead of
  a list of subjects.
* JSON export and import now include session info and feature settings.

Bug fixes:
* Editor buttons now add new lines when necessary to produce correct
  Markdown.
* New lines in Markdown content are now displayed as is.
* All question formats apart from 'grid' are now correctly exported to
  CSV.

Changes for developers:
* Initial support for localization variations has been implemented.

Release version 2.3.3

Bug fixes:
* Fixes JavaScript errors occuring with `question.answer-option-limit`
  set to values other than `8`.
* Fixes charset errors in German i18n of dates.
* Fixes opening of external pages (blog, privacy, legal info) when they
  can not be embedded in Firefox

Release version 2.3.2

This patch release improves browser compatibility.

Minor changes:
* Improved browser detection

Bugfixes:
* Fixes scrolling with touch devices for Edge browser
* Fixes numerous usability and rendering errors with Internet Explorer

Release version 2.3.1

Bugfixes:
* Fixes a regression leading to incorrect detection of Safari.

Release version 2.3.0

Major features:
* Use case scenarios: To simplify the user interface, question types and
  functions are now enabled on a per session basis. Unused features are
  hidden and no longer distract from the workflow.
* Improved UI theming: Theming has been simplified by providing a
  variables file. Deep knowledge of CSS, SCSS and ARSnova's HTML
  structure is no longer required for color adjustments. Additionally,
  the default theme got a refresh.
* Message of the Day: It is now possible to display a message to all
  users per session or globally.
* New question type "Ask the audience": four options A, B, C, and D
  without question text.
* CSV export/import (experimental): Questions and their answers can now
  be exported to a simple CSV file.

Minor features and changes:
* Improved formatting: New formatting options (GitHub Flavored Markdown)
  are available.
* New templates for opinion polls have been added.
* Chrome's "pull-to-refresh" action is now longer triggered in text
  fields.
* Text selection in multiline editors no longer triggers scrolling.
* It is now possible to freeze live feedback.
* Image uploads except for hot spot questions and image answers are no
  longer available. Images on external servers can still be embedded via
  Markdown.
* Usability improvements and bug fixes

Bug fixes:
* Image scaling and rotation have been fixed.

Changes for developers:
* The `grunt run` build task has been improved to display important
  messages by Sencha Cmd. Verbose output for debugging purposes is
  displayed when parameter `-v` is used.
* Maven builds are now deprecated for the frontend. Please use Grunt
  instead.
* Version information is now saved with builds and is accessible via
  `Version` controller.

**This version is brought to you by:**
Project management: Klaus Quibeldey-Cirkel
Lead programming: Andreas Gärtner, Daniel Gerhardt, Tom "tekay" Käsler,
Christoph Thelen
Contributions: Daniel Haag (University of Innsbruck), Juan Markowich,
Marco Schäfer