Widget option cannot specify the choice type anymore, you have to append the widget in the type name instead :
Before :
$formBuilder
->add('country', 'genemu_jquerychosen', array(
'widget' => 'country',
));
Now :
$formBuilder->add('country', 'genemu_jquerychosen_country');
Same instructions than Chosen.
Routing is defined in xml files instead of annotations (to remove the depency with SensioFrameworkExtraBundle)
Before :
# app/config/routing.yml
genemu_base64:
resource: "@GenemuFormBundle/Controller/Base64Controller.php"
type: annotation
Now :
# app/config/routing.yml
genemu_base64:
resource: "@GenemuFormBundle/Resources/config/routing/base64.xml"
The 'position' option has been removed, if you had it set to 'right', you should add your own template for this type.