lift restriction on object_id and UID having to match

addresses #135

.sqlx/query-804ed2a4a7032e9605d1871297498f5a96de0fc816ce660c705fb28318be0d42.json

@@ -0,0 +1,32 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT id, uid, ics FROM calendarobjects WHERE principal = ? AND cal_id = ? AND deleted_at IS NULL",
+  "describe": {
+    "columns": [
+      {
+        "name": "id",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "uid",
+        "ordinal": 1,
+        "type_info": "Text"
+      },
+      {
+        "name": "ics",
+        "ordinal": 2,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 2
+    },
+    "nullable": [
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "804ed2a4a7032e9605d1871297498f5a96de0fc816ce660c705fb28318be0d42"
+}