API and Web UI changes:

* Web Client 2.12.0

Added

* Add flood limits for incoming and outgoing connect requests to avoid crashes in case of severe flood (#63)
* Add “verbose” status message severity

Changed

* Update Node.js to version 18.17.1
* Lower the default minimum search interval to 5/10 seconds

Fixed

* Fix transfer connections not being created in some cases when download sources are added
* Fix sources column in download queue not being updated in some cases when download sources are added
* Fix an additional whitespace being added after user nicks in some cases
* Fix “engname” country format param (#88)