Concerns: pushword/core
Pushword requires VichUploaderBundle 3.0; composer update absorbs it unless the site extends Vich itself.
Affects sites with a custom namer or directory namer. Widen the first parameter of name() / directoryName() from object to object|array, type-hint the mapping as PropertyMappingInterface (PropertyMapping is final now), and replace the removed Vich\UploaderBundle\Mapping\Annotation namespace with Mapping\Attribute.
The markdown fragment cache is keyed by a version that 1.0.7 forgot to bump, so a page already rendered kept serving its images without the title credit that release added. The bump is in this one — see Image license.
Nothing to do: the first render after the upgrade rebuilds the fragments.