https://github.com/matrix-org/matrix-spec-proposals/pull/3553 Requires https://github.com/matrix-org/matrix-events-sdk/issues/10 Requires https://github.com/matrix-org/matrix-events-sdk/issues/8 Requires https://github.com/matrix-org/matrix-events-sdk/issues/7
