Add BaseModel with stricter attribute existence checking

app/Models/Proposal.php

@@ -3,7 +3,6 @@
 namespace App\Models;
 
 use App\Models\Concerns\Reportable;
-use Illuminate\Database\Eloquent\Model;
 
 /**
  * Change proposal
@@ -20,7 +19,7 @@ use Illuminate\Database\Eloquent\Model;
  * @property-read Table $table
  * @property-read Revision $revision
  */
-class Proposal extends Model
+class Proposal extends BaseModel
 {
     use Reportable;
     protected $guarded = [];