3.0.0

• Date field accepts data-attributes.
• Add dropzone.
• Add bootstrap confirm dialog instead of native ugly js.
• Remove elements don't reload page, also don't mess with cache.

Migration intstructions from 2.6.x to 3.x

• *file Models now inherit from Adminpanel::Image
• Whitelisted is changed from *files_attributes: [...] to *file_ids: []
• Merge all adminpanel_*files into a new table called: adminpanel_images, with attrbitues:
• file_size: string
• content_type: string
• model_id: integer(this is the foreign_key)
• model_type: string
• file:string
• type: string
• and created and updated_at