Merge pull request CTFd#1385 from CTFd/mark-2.4.1

2.4.1 / 2020-05-06
==================

**Admin Panel**
* Fix issue where admins couldn't update the "Account Creation" email
* Fix issue where the Submissions page in the Admin Panel could not be paginated correctly

**Miscellaneous**
* Add `SQLALCHEMY_ENGINE_OPTIONS` to `config.py` with a slightly higher default `max_overflow` setting for `SQLALCHEMY_MAX_OVERFLOW`. This can be overridden with the `SQLALCHEMY_MAX_OVERFLOW` envvar
* Add `node_modules/` to `.dockerignore`

Merge pull request CTFd#1378 from CTFd/bulk-clear-sessions

* Add function to mass clear the cached user/team attributes for all users/teams

Mark 2.3.3 (CTFd#1316)

2.3.3 / 2020-04-12
==================

**General**
* Re-enable the Jinja LRU Cache for **significant speedups** when returning HTML content

**API**
* `POST /api/v1/unlocks` will no longer allow duplicate unlocks to happen

**Admin Panel**
* Makes `Account Visibility` subtext clearer by explaining the `Private` setting in Config Panel

**Themes**
* Fixes an issue with using a theme with a purely numeric name
* Fixes issue where the scoreboard graph always said Teams regardless of mode

**Miscellaneous**
* Bump max log file size to 10 MB and fix log rotation
* Docker image dependencies (apk & pip) are no longer cached reducing the image size slightly

Prevent double confirmations from happening (CTFd#1253)

* Prevents user from confirming their account twice

2.3.0 (CTFd#1248)

2.3.0 / 2020-02-17
==================

**General**
* During setup, admins can register their email address with the CTFd LLC newsletter for news and updates
* Fix editting hints from the admin panel
* Allow admins to insert HTML code directly into the header and footer (end of body tag) of pages. This replaces and supercedes the custom CSS feature.
    * The `views.custom_css` route has been removed.
* Admins can now customize the content of outgoing emails and inject certain variables into email content.
* The `manage.py` script can now manipulate the CTFd Configs table via the `get_config` and `set_config` commands. (e.g. `python manage.py get_config ctf_theme` and `python manage.py set_config ctf_theme core`)

**Themes**
* Themes should now reference the `theme_header` and `theme_footer` configs instead of the `views.custom_css` endpoint to allow for user customizations. See the `base.html` file of the core theme.

**Plugins**
* Make `ezq` functions available to `CTFd.js` under `CTFd.ui.ezq`

**Miscellaneous**
* Python imports sorted with `isort` and import order enforced
* Black formatter running on a majority of Python code

Mark 2.2.3 (CTFd#1222)

2.2.3 / 2020-01-21
==================

### This release includes a critical security fix for CTFd versions >= 2.0.0

All CTFd administrators are recommended to take the following steps:
1. Upgrade their installations to the latest version
2. Rotate the `SECRET_KEY` value
3. Reset the passwords for all administrator users

**Security**
* This release includes a fix for a vulnerability allowing an arbitrary user to take over other accounts given their username and a CTFd instance with emails enabled

**General**
* Users will receive an email notification when their passwords are reset
* Fixed an error when users provided incorrect team join information

Mark 2.2.2 (CTFd#1212)

2.2.2 / 2020-01-09
==================

**General**
* Add jQuery, Moment, nunjucks, and Howl to window globals to make it easier for plugins to access JS modules
* Fix issue with timezone loading in config page which was preventing display of CTF times

Mark 2.2.1 (CTFd#1208)

2.2.1 / 2020-01-04
==================

**General**
* Fix issue preventing admins from creating users or teams
* Fix issue importing backups that contained empty directories

2.2.0 (CTFd#1188)

2.2.0 / 2019-12-22
==================

## Notice
2.2.0 focuses on updating the front end of CTFd to use more modern programming practices and changes some aspects of core CTFd design. If your current installation is using a custom theme or custom plugin with ***any*** kind of JavaScript, it is likely that you will need to upgrade that theme/plugin to be useable with v2.2.0. 

**General**
* Team size limits can now be enforced from the configuration panel
* Access tokens functionality for API usage
* Admins can now choose how to deliver their notifications
    * Toast (new default)
    * Alert
    * Background
    * Sound On / Sound Off
* There is now a notification counter showing how many unread notifications were received
* Setup has been redesigned to have multiple steps
    * Added Description
    * Added Start time and End time,
    * Added MajorLeagueCyber integration
    * Added Theme and color selection
* Fixes issue where updating dynamic challenges could change the value to an incorrect value
* Properly use a less restrictive regex to validate email addresses
* Bump Python dependencies to latest working versions
* Admins can now give awards to team members from the team's admin panel page

**API**
* Team member removals (`DELETE /api/v1/teams/[team_id]/members`) from the admin panel will now delete the removed members's Submissions, Awards, Unlocks

**Admin Panel**
* Admins can now user a color input box to specify a theme color which is injected as part of the CSS configuration. Theme developers can use this CSS value to change colors and styles accordingly.
* Challenge updates will now alert you if the challenge doesn't have a flag
* Challenge entry now allows you to upload files and enter simple flags from the initial challenge creation page

**Themes**
* Significant JavaScript and CSS rewrite to use ES6, Webpack, yarn, and babel
* Theme asset specially generated URLs
    * Static theme assets are now loaded with either .dev.extension or .min.extension depending on production or development (i.e. debug server)
    * Static theme assets are also given a `d` GET parameter that changes per server start. Used to bust browser caches.
* Use `defer` for script tags to not block page rendering
* Only show the MajorLeagueCyber button if configured in configuration
* The admin panel now links to https://help.ctfd.io/ in the top right
* Create an `ezToast()` function to use [Bootstrap's toasts](https://getbootstrap.com/docs/4.3/components/toasts/)
* The user-facing navbar now features icons
* Awards shown on a user's profile can now have award icons
* The default MarkdownIt render created by CTFd will now open links in new tabs
* Country flags can now be shown on the user pages

**Deployment**
* Switch `Dockerfile` from `python:2.7-alpine` to `python:3.7-alpine`
* Add `SERVER_SENT_EVENTS` config value to control whether Notifications are enabled
* Challenge ID is now recorded in the submission log

**Plugins**
* Add an endpoint parameter to `register_plugin_assets_directory()` and `register_plugin_asset()` to control what endpoint Flask uses for the added route

**Miscellaneous**
* `CTFd.utils.email.sendmail()` now allows the caller to specify subject as an argument
    * The subject allows for injecting custom variable via the new `CTFd.utils.formatters.safe_format()` function
* Admin user information is now error checked during setup
* Added yarn to the toolchain and the yarn dev, yarn build, yarn verify, and yarn clean scripts
* Prevent old CTFd imports from being imported