* Add a property aggregating all names of a NamespacedValue ([\#2656](https://github.com/matrix-org/matrix-js-sdk/pull/2656)). * Implementation of MSC3824 to add action= param on SSO login ([\#2398](https://github.com/matrix-org/matrix-js-sdk/pull/2398)). Contributed by @hughns. * Add invited_count and joined_count to sliding sync room responses. ([\#2628](https://github.com/matrix-org/matrix-js-sdk/pull/2628)). * Base support for MSC3847: Ignore invites with policy rooms ([\#2626](https://github.com/matrix-org/matrix-js-sdk/pull/2626)). Contributed by @Yoric. * Fix handling of remote echoes doubling up ([\#2639](https://github.com/matrix-org/matrix-js-sdk/pull/2639)). Fixes #2618.