* Core/API: fixed wrong event ordering when responding to listen requests.
* Core/Expressions: added expression validation reasons.
* Frontend: netmask can now be edited as address.
* Frontend: device and settings forms are now automatically refreshed using polling.
* Frontend: fixed PWA installability issues; browser should now automatically prompt for app installation.
* Frontend: default message buttons are now automatically focused.
* Frontend: fixed various issues related to theme, scaling and window size settings.
* Frontend/Devices: simplified add device form.
* Frontend/Devices: fixed various issues when renaming device.
* Frontend/Settings: currently running frontend version is now displayed.
* Slaves: improved communication at startup.
* Slaves: listening support is now automatically detected when adding a new device.
* Various updates according to new API specs.
version-0.18.0-alpha.5