gigapdf-lib v0.67.0

Added

• Structured-editing ModelOps + permissions API exposed in the SDK. New
  applyModelOps variants: paragraph formatting (setParagraphStyle — align/indent/
  spacing/line-height), lists (setListLevel/setListMarker/setListOrdered),
  absolute block placement (setBlockFrame/setBlockRotation), and table styling
  (setCellShading/setRowHeight/setColWidth/setTableBorder). Table structural
  edits (insertTableRow/deleteTableRow/insertTableColumn/deleteTableColumn/
  setCellSpan + sheet row/column ops) and GigaPdfDoc permission helpers
  (permissionsToP/decodePermissions/getPermissions + saveEncrypted({ flags }))
  are now callable from JS.

Changed

• 8 PDF permission flags are functional: /P is computed from named flags per
  ISO 32000-1 Table 22 (previously a cosmetic integer).