Update Instance model, add entity casts

app/Instance.php

@@ -6,7 +6,21 @@ use Illuminate\Database\Eloquent\Model;
 
 class Instance extends Model
 {
-	protected $fillable = ['domain', 'banned', 'auto_cw', 'unlisted', 'notes'];
+    protected $casts = [
+        'last_crawled_at' => 'datetime',
+        'actors_last_synced_at' => 'datetime',
+        'notes' => 'array',
+        'nodeinfo_last_fetched' => 'datetime',
+        'delivery_next_after' => 'datetime',
+    ];
+
+    protected $fillable = [
+        'domain',
+        'banned',
+        'auto_cw',
+        'unlisted',
+        'notes'
+    ];
 
     public function profiles()
     {