Service definitions need updating to match D8 core changes

D8 head is changing rapidly

Here is result from visiting /admin/config/services/simplereservation

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "\drupal\simplereservation\form\simplereservationadminpageform". in Symfony\Component\DependencyInjection\Container->get() (line 303 of /...XXX../drupalModules/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Container.php).

I will find time this weekend to look into it.