v1.1.0

= 1.1.0 =

• Add: Image ordering controls. Order a gallery by date, title, random, or the
  order you arranged it in, with a best-fit option that places wide images in
  the mosaic layout's larger cells.
• Add: Filters that let a companion plugin register its own layout —
  gallery_display_valid_layouts in PHP, galleryDisplay.layouts and
  galleryDisplay.previewStylesheets in JavaScript.
• Security: Escape and validate block attributes before they reach the editor
  preview. A crafted attribute could previously inject markup that ran in the
  admin. The preview is now sandboxed as well.
• Security: Validate the aspect-ratio and block-gap values used in the block's
  inline styles.
• Fix: Masonry and mosaic layouts no longer keep their load-time widths when
  the browser is resized.
• Fix: The lightbox stylesheet now loads in the document head instead of after
  the page content, removing a flash of unstyled links.
• Fix: Gallery links fall back to the attachment title or caption for their
  accessible name when the image has no alt text.
• Fix: Asset cache-busting used a stale version number, so browsers could keep
  serving outdated CSS and JavaScript after an update.
• Change: Image-size labels in the block sidebar are now translatable.