Save the changes between syncs in cache

- Fixes high cpu issues caused by the serialization of the whole
  in-memory state.
- Display name changes are now visible in the timeline.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/RoomState.cc b/src/RoomState.cc

index 8db9b2bc..2b8bcdba 100644
--- a/src/RoomState.cc
+++ b/src/RoomState.cc
@@ -22,6 +22,9 @@
 
 namespace events = matrix::events;
 
+RoomState::RoomState() {}
+RoomState::RoomState(const QJsonArray &events) { updateFromEvents(events); }
+
 void
 RoomState::resolveName()
 {