Ruma can't currently handle an event with the wrong event content type.
When replacing the MessageEventStub's content it automatically
serializes as "m.room.redaction".
The MessageQueue holds MessageEventStub<AnyMessageEventContent> so when
a redaction event is encountered the redacted event's content can be
replaced. The Unsigned field redacted_because is also populated with the
redaction event itself with the addition of a room_id Stub -> full
event.
The `update_profile` method cannot live in `RoomMember` since that
operation needs information which only exists in `Room` (for instance,
it needs other members in order to perform display name disambiguation).
Leaving other mutating methods on `RoomMember` (like `update_power` and
`update_presence`) then seemed illogical so they were all moved into
`Room`.
In addition, a small refactoring was done to remove
`did_update_presence` and `update_presence` since their existence
doesn't make much sense anymore and it saves us from repeating work.
Their function is now done in `receive_presence_event`.
Also, several docstrings were corrected and reworded.
The state store creates directory structure but the crypto store does
not.
This can lead to confusing errors where we require a directory to be
created by the library user but it gets created by the library.
EventBuilder now clears itself between `build_sync_response` calls so
that each subsequent call will return an empty response if nothing was
added.
This allows reuse of a single EventBuilder instance which is important
for correct sync token rotation.
The previous test only tested using the `EventEmitter`, which missed the
fact that the client was receiving unhoisted events. The test now also
tests the client state to detect this.
Remove 'get' from get_public_rooms* methods.
Rename RoomSearchBuilder -> RoomListFilterBuilder.
Use u32 over UInt in builders and Into<String> for String.
Fix docs of public room methods and builders.
