fixed AlBlockManagerJsonBlockCollection which was not working properly, in fact when you add or remove a block it did not add or remove the right item: fixed
updated SlotRendererExtension renderBlock method to accept extra attributes passed to the block's editor
blockDeleted triggered before updating the block's content on the page and passed the deleted block as argument
added a listener to close the list interface when the block is removed and the list is still in edit mode
refactored repository initialization
updated CHANGELOG