**Breaking changes**
The livechat v13 introduced a new library to handle regular expressions in forbidden words, to avoid
[ReDOS](https://en.wikipedia.org/wiki/ReDoS) attacks.
Unfortunately, this library was not able to install itself properly on some systems, and some admins were not able
to install the livechat plugin.
That's why we have disabled this library in v14, and introduce a new settings to enable regexp in forbidden words.
By default this settings is disabled, and your users won't be able to use regexp in their forbidden words.
The risk by enabling this feature is that a malicious user could cause a denial of service for the chat bot, by using a
special crafted regular expression in their channel options, and sending a special crafter message in one of their
rooms. If you trust your users (those who have rights to livestream), you can enable the settings. Otherwise it is not
recommanded. See the documentation for more informations.
**Minor changes and fixes**
* Channel's forbidden words: new "enable" column.
* New settings to enable regular expressions for channel forbidden words.
* "Channel advanced configuration" settings: removing the "experimental feature" label.
* forbid messages with too many special characters (#517).
* update moderation bot to v0.4.0.
* refactoring localization segments to reuse existing one in multiple
context.
* npm run doc:translate
* Prosody mod_muc_peertubelivechat_roles module
* Fix ConverseJS to disable the message field when room is unmoderated
and user is visitor
* Mute/voice anonymous users when changing room configuration.
* Display a specific message to muted anonymous users.
* Default value for mute_anonymous in channel options.
* Feature documentation
* the code handling `separators` was buggy, so i simplified to use only
one separator
* was not practical for bot quotes (can't edit), so replaced by a
textarea
