Migrating to v8.1

This guide explains how to upgrade your application when updating CalendarBundle to the version 8.1.

What Changed

The bundle has been modernized to follow Symfony 8 best practices:

Before	After
`src/CalendarBundle.php` extends `Bundle`	Extends `AbstractBundle`
`src/DependencyInjection/CalendarExtension.php`	Removed (merged into bundle)
`src/DependencyInjection/Configuration.php`	Removed
`src/Resources/config/services.yaml`	`config/services.yaml`
`src/Resources/config/routing.yaml`	`config/routing.yaml`
`src/Resources/views/`	`templates/`
`src/Resources/doc/`	`docs/`
`tests/DependencyInjection/CalendarExtensionTest.php`	`tests/DependencyInjection/CalendarBundleTest.php`

Short service aliases have been added for convenience:

Class Name	Alias
`CalendarBundle\Serializer\Serializer`	`calendar.serializer`
`CalendarBundle\Controller\CalendarController`	`calendar.controller`

Both naming conventions are supported.

If you import the bundle's routing manually, update the path:

Before:

# config/routes/calendar.yaml
calendar:
    resource: '@CalendarBundle/Resources/config/routing.yaml'

After:

# config/routes/calendar.yaml
calendar:
    resource: '@CalendarBundle/config/routing.yaml'

If you override the bundle's templates in your application, no change is required. Symfony automatically resolves the correct location.

Update the bundle via Composer:
```
composer update tattali/calendar-bundle
```
Update routing import in config/routes/calendar.yaml (if using manual import):
```
calendar:
    resource: '@CalendarBundle/config/routing.yaml'
```
Clear cache:
```
php bin/console cache:clear
```

The following remain unchanged and fully backward compatible:

Service IDs - CalendarBundle\Serializer\Serializer, CalendarBundle\Controller\CalendarController, and CalendarBundle\Serializer\SerializerInterface alias
Event subscriber pattern - Your SetDataEvent subscribers work exactly the same
API endpoint - /fc-load-events route and behavior unchanged
Event entity - CalendarBundle\Entity\Event unchanged
Frontend integration - No JavaScript changes needed