v1.15.0-beta.2

Changed

Setting up notification channels is now guided by the server: the mobile apps build each provider form automatically, grouping fields into sections just like before, and only showing the fields that apply to what you have already filled in.
Channel passwords and tokens are now handled more safely. They are accepted when you save a channel but are never returned afterwards, so they can no longer be seen by anyone reading the channel configuration. Editing a channel keeps its saved secrets unless you explicitly change or remove them.
Notification conditions accept an empty filter group, which simply matches every alert. Combined with the repeated-matches option, this lets you fire on any number of alerts within a time window without picking any filter.

This is a beta release: notification behavior may still be refined before the final release.