Merged migration files.

database/migrations/2018_09_07_075622_create_io_types_table.php

@@ -18,6 +18,8 @@ class CreateIOTypesTable extends Migration
 
             $table->string('name');
 
+            $table->tinyInteger('factor');
+
             $table->timestamps();
         });
     }

database/migrations/2018_09_07_101031_create_bookings_table.php

@@ -26,7 +26,7 @@ class CreateBookingsTable extends Migration
             $table->string('person_or_company');
 
             // An additional note to the booking
-            $table->string('note');
+            $table->string('note')->nullable();
 
             $table->timestamps();
         });