Room IDs being splittable into localpart and servername does not have much inherent value and there are proposals like MSC4051¹ that propose changing the format. Relaxing the rules makes Ruma forwards-compatible with those proposals. The server_name accessor is kept because it is used by at least one downstream, but is updated to return an `Option`. ¹ https://github.com/matrix-org/matrix-spec-proposals/pull/4051
ruma-common
Common types for other Ruma crates.
The feature-gated modules are defined as follow:
api
module
Behind the api
feature, core types used to define the requests and responses for each endpoint in
the various Matrix API specifications. These types can be shared by client
and server code for all Matrix APIs.
events
module
Behind the events
feature, serializable types for the events in the Matrix
specification that can be shared by client and server code.