Continue implementing rooms

Changing lots of things along the way... But that's how it is: Make one
change, make more changes to fix the resulting errors and so on.

room.md

@@ -0,0 +1,31 @@
+- Determine room name
+- Connect for the first time
+  - If connection fails: Show error, done
+  - Set room
+    - If room is invalid: Show error, done
+  - If no nick is set by default: Let user choose nick
+  - Identify yourself
+    - If nick is invalid: Show error, let user edit nick
+    - If identity is invalid: Show error, done
+  - Listen to events, send commands
+- Reconnect
+  - If connection fails: Show error, done
+  - Set room
+    - If room is invalid: Show error, done
+  - Identify yourself
+    - If nick is invalid: Show error, let user edit nick
+    - If identity is invalid: Show error, done
+  - Listen to events, send commands
+
+General state:
+- Initial nick (optional)
+- A way to stop the entire room
+
+State present when WS connection exists:
+- Connection itself
+- Next command id
+- Replies
+
+State present when fully connected:
+- Own session
+- Others