Set room history visibility to "joined"

Issue #169

src/components/CreateRoom.vue

@@ -380,6 +380,13 @@ export default {
                 algorithm: "m.megolm.v1.aes-sha2",
               },
             },
+            {
+              type: "m.room.history_visibility",
+              state_key: "",
+              content: {
+                history_visibility: "joined"
+              }
+            }
           ],
         };
       } else {
@@ -403,6 +410,13 @@ export default {
                 guest_access: "forbidden",
               },
             },
+            {
+              type: "m.room.history_visibility",
+              state_key: "",
+              content: {
+                history_visibility: "joined"
+              }
+            }
           ],
         };
       }

src/services/matrix.service.js

@@ -643,8 +643,15 @@ export default {
                                 guest_access: "forbidden",
                               },
                             },
+                            {
+                              type: "m.room.history_visibility",
+                              state_key: "",
+                              content: {
+                                history_visibility: "joined",
+                              },
+                            },
                           ],
-                            invite: [userId]
+                          invite: [userId],
                         };
                         return this.matrixClient
                             .createRoom(createRoomOptions)