v0.36.0 - 2026-07-06

Added

• Added an XLSX streaming API for cell and formula records, including shared
  formula metadata. There are two new APIs:
  XlsxCellReader::next_cell_with_formula() and
  XlsxCellReader::next_cell_with_formula_metadata(). Previously it required 2
  separate reads to get similar information. PR #654.

• Added a per-sheet, lazy XLSX API to read worksheet hyperlinks:
  Xlsx::hyperlinks_by_sheet_name() and Xlsx::hyperlinks_by_sheet_id(). Each
  hyperlink reports its anchor range (Dimensions), external target
  (URL/file/mailto), optional internal location, displayed text, and optional
  tooltip. PR #659.

• Extended the picture feature to also extract cell position information and
  the raw image data, and to handle newer Excel 365 style embedded images.
  PR #652.

• Added support for reading XLSX rich string (rstring) records. Issue #655.

Changed

• Updated dependencies and the minimum supported Rust version (MSRV) for
  release 0.36.0:

  • atoi_simd: 0.17 → 0.18. PR #672
  • zip: 7.0 → 8.6. This raises the MSRV from 1.83 to 1.88. PR #672
  • quick-xml: 0.39 → 0.41, to address advisories RUSTSEC-2026-0194 and
    RUSTSEC-2026-0195. Issue #674.

• Performance improvements:

  • Custom zero-overhead attribute extraction and optimized local_name
    matching. PR #621
  • Optimized buffer use for XLSB cell reads. PR #662

• Refactored and unified the merged-cell handling APIs. For historical reasons
  the XLSX methods for accessing merged cells were duplicated. This change
  introduces a cleaner API, deprecates the older methods, and aligns the XLS
  merged-cell handling with the new XLSX APIs. Issue #536.

• Made XLSX package path resolution more robust for non-standard package
  layouts. Issue #638.

• Changed XLSX <t> text handling in shared strings and inline strings to trim
  leading and trailing ASCII whitespace (space, tab, CR, LF) unless the element
  carries xml:space="preserve". See PR #671 and PR #673.

Fixed

• Fixed XLSX shared-formula cell-name replacement to be more precise for defined
  names. PR #664.

• Fixed XLSX custom number-format detection to treat the * (fill/repeat)
  operator as escaping the character that follows it. PR #667.

• Improved the XLS error message when a file is too small to be a valid
  workbook. PR #670.

What's Changed

• xlsx: handle minimal package structure by @aquasync in #639
• Refactor the APIs/code for merge cells/range handling by @jmcnamara in #651
• xlsx: add support for rstring records by @aquasync in #656
• feat(xlsx): add XLSX cell+formula streaming records with shared formula metadata by @PSU3D0 in #654
• xlsx: add worksheet hyperlink reading API by @adstep in #659
• picture: extend the picture feature to include more image metadata by @jmcnamara in #652
• perf: optimise buffer use for XLSB cell reads by @alexander-beedie in #662
• perf: custom zero-overhead attribute extraction by @alexander-beedie in #621
• tests(xlsx): add regression for date cells with quoted custom number formats by @jnsn99 in #665
• Handle the * fill operator in custom number format detection by @greymoth-jp in #667
• More informative error if the file is very short by @sftse in #670
• fix: strip whitespace from elements without xml:space="preserve" by @dayongxie in #671
• Make shared formula cell replacement more greedy by @OSjoerdWie in #664
• example: fix cargo test warning for read_picture_data example by @jmcnamara in #676
• fix(xlsx): fix whitespace trimming bug introduced in #671 by @dayongxie in #673

New Contributors

• @PSU3D0 made their first contribution in #654
• @adstep made their first contribution in #659
• @jnsn99 made their first contribution in #665
• @greymoth-jp made their first contribution in #667
• @dayongxie made their first contribution in #671
• @OSjoerdWie made their first contribution in #664

Full Changelog: v0.35.0...v0.36.0