signwriting 1.4.0

Dart utilities for SignWriting - formats, tokenizer, mirror, fingerspelling, mouthing, joins and metrics.

1.4.0

• Add canonicalize — reorders a sign's symbols into a canonical order, centered with a tight box (pure Dart; matches the Python reference for non-overlapping signs)

1.3.0

• Add FSW → SWU conversion (fsw2swu, mark2swu, num2swu, position2swu), completing the FSW ↔ SWU round-trip
• Add symbol metrics (getSymbolSize, signwritingBox, symbolExists) backed by an embedded size table — no font renderer required
• Add joinSignsHorizontal and signFromSymbols
• Add mirror (mirrorSymbol, mirrorSign) — verified identical to the Python package across all 37,811 symbols
• Add fingerspelling (spell, spellText) with data for 23 signed languages
• Add mouthing (mouthIpa, mouth) for IPA → SignWriting
• Changed: joinSigns now produces the same output as the Python reference (font-metric based) and is deprecated in favor of joinSignsVertical

1.2.1

• Minor fix

1.2.0

• Remove assets

1.1.0

• SWU to FSW
• Documentation

1.0.0

• Initial version
• Everything except visualizer