Mark 3.2.0 release date in CHANGELOG (#1756)

# 3.2.0 / 2020-12-07

**General**

- Add Team invites.
  - Team invites are links containing a token that allow a user to join a team without knowing the team password
  - Captains can generate invite tokens for their teams
  - Admins can generate Team invite links as well
- Improved Team handling
  - Prevent team joining while already on a team
  - Return 403 instead of 200 for team join/create errors
  - Allow team captains whose teams haven't done anything to disband their team
- Allow for uploading navbar logo, favicon, and index page banner during initial setup
- Fixed issue in teams mode where a user couldn't unlock a hint despite their team having enough points
  - The fix for this is essentially to allow the user's points to go negative
- Imports have been made more stable
  - This is primarily done by killing MySQL processes that are locking metadta
  - This is a subpar approach but it seems to be the only solution to avoid a metadata lock in MySQL. This approach did not appear to be needed under Postgres or SQLite

**API**

- Addition of `POST /api/v1/teams/me/members` to generate invite tokens for teams
- Fixed an issue in `POST /api/v1/awards` where CTFd would 500 when a user could not be found by the provided `user_id`
- `POST /api/v1/unlocks` in teams mode now uses the team's score to determine if a user can purchase a hint
  - Properly check for existing unlocks in teams mode in `POST /api/v1/unlocks`
- `/api/v1/notifications` and `/api/v1/notifications/[notification_id]` now have an html parameter which specifies the rendered content of the notification content

**Themes**

- Add Team Invite icon and Disband Team icon to teams/private.html
- Add teams/invite.html file to handle team joining with invites
- Added syntax highlighting to challenge descriptions, pages, hints, notifications, comments, and markdown editors
  - This is done with `highlight.js` which has been added to `package.json`
- Fix notifications to properly fix/support Markdown and HTML notifications
  - Notifications SQL Model now has an html propery
  - Notifications API schemas now has an html field
- Removed MomentJS (see https://momentjs.com/docs/#/-project-status/) in favor of dayjs
  - dayjs is mostly API compatible with MomentJS. The only major changes were:
    - dayjs always uses browser local time so you don't need to call `.local()`
    - dayjs segments out some MomentJS functionality into plugins which need to be imported in before using those features
- Fixed issue in `challenge.html` where the current attempt count would have a typo
- Fixed issue in `challenge.html` where the max attempts for a challenge would not show if it was set to 1
- Edit donut charts to have easier to read legends and labels
- Make data zoom bars thinner and more transparent
- Add logo, banner, and favicon settings to the setup.html

**Plugins**

- The `auth.register` (`/register`) endpoint now accepts a `?next=` parameter to define where to redirect to after registration
- There is now a `registered_only` decorator to redirect users to `auth.register` (`/register`) instead of `auth.login` (`/login`)
- Don't run `db.create_all()` as much during plugin upgrade or during imports
  - By avoiding this we can let alembic and migrations do more of the table creation work but this means that plugins specifically opt into `app.db.create_all()` and will not implicitly get it through `upgrade()`.
  - This means plugins that run `upgrade()` without a migrations folder (no idea who would do this really) will need to upgrade their code.
- The plugin `upgrade()` function now accepts a `lower` parameter which specifies what lower revision should be used to start from.
  - This is used to support plugin migrations during import so that we can import data directly at the point that the import was taken from
  - `lower="current"` means to use the current revision and `lower=None` would mean to use the absolute base revision (e.g. plugin's first installation)
  - By default this doesn't change `upgrade()` behavior

**Admin Panel**

- Add Favicon uploading to the Admin Panel
- Move Logo uploading to the Theme tab in the Admin Panel
- The challenge left side bar tabs have been rewritten into VueJS components.
  - This fixes a number of issues with the consistency of what data is deleted/edited in the challenge editor
  - This also prevents having to refresh the page in most challenge editing situations
- Fixed a possible bug where the update available alert wouldn't go away on server restart
- Examples for regex flags are now provided
- Wrong submissions has been renamed to Incorrect Submissions
- Graphs in the Admin Statistics page will now scroll with mouse wheel to improve browsing large datasets
- Fixed an issue where Users/Teams could be created with a null password

**Deployment**

- A restart policy set to `always` has been added to nginx in docker-compose
- Rename `requirements.txt` to `requirements.in` and generate `requirements.txt` using `pip-tools` under Python 3.6
- `UPLOAD_PROVIDER` no longer has a default `filesystem` set in config.ini. Instead it is defaulted through `config.py`

**Miscellaneous**

- The `psycopg2` dependency in development.txt has been removed in favor of `psycopg2-binary` which was updated to 2.8.6
- The `moto` dependency in development.txt has been updated to 1.3.16
- Add `pip-tools` to `development.txt`
- Add `import_ctf` and `export_ctf` commands to `manage.py` and deprecate `import.py` and `export.py`
- Override the `MAIL_SERVER` config with the `TESTING_MAIL_SERVER` envvar during tests
- `ping` events in the notification event handler have been fixed to not send duplicates

CHANGELOG.md

@@ -1,4 +1,4 @@
-# 3.2.0 / unreleased
+# 3.2.0 / 2020-12-07
 
 **General**