v0.9.1

Fixed

• A heading that mixes alphabets is found in every tab of a document and
  inside table cells, not only among the first tab's top-level paragraphs.
  Google's export flattens a one-cell table used as a frame into the page, so
  a heading inside one is published like any other and was missed. Its link
  opens the tab it is in. The source facts move to version 3, so a full sync
  after upgrading inspects every document again.