1.29.0

• Save a section and use it on any other page. Save as a section… on the
  Section tab of a section's popup stores it as one of your site's own
  sections, listed under ＋ Section as Your sections everywhere. Each copy you
  place is ordinary blocks you can edit one by one, independent of the page it
  came from. Saving happens at once rather than as an unsaved change, and a
  saved section is removed again under Patterns in the WordPress admin. A
  section holding a synced pattern, a template part or content bound to that
  one page cannot be saved, and the form says which it was.
• ClaraVE.apply() can treat a run of neighbouring blocks as one, with three
  operations: group wraps them in a single Group, ungroup takes a Group
  apart again in its place, and move-to moves a run of blocks elsewhere on
  the page, including inside another container. Each is one change the editor
  undoes in one step. Blocks that are not next to each other, or that
  WordPress will not let move, are refused with the reason instead of quietly
  doing nothing.
• ClaraVE.saveSection() and a save-section event for the same, and
  GET /block-patterns now says which source each section came from.