smufl 0.2.1

Parse SMuFL (Standard Music Font Layout) metadata.
Documentation 
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use crate::{GlyphData, StaffSpaces};

/// Advance width of each glyph.
///
/// The advance width is defined as the width of a glyph as measured from its
/// origin to the origin of the next glyph on the line. In text fonts for many
/// languages, glyphs normally have positive left and right side-bearings, i.e.
/// space to either side of the glyph, so that a string of glyphs will show the
/// expected letter spacing. The advance width includes these side-bearing
/// values. If a glyph's path protrudes beyond the width defined for the glyph
/// in the font, however, these protrusions to the left or the right – which can
/// be termed negative side-bearings – are not included in the advance width.
///
/// In SMuFL fonts, glyphs typically have zero left and right side-bearings, and
/// some glyphs may have negative side-bearings. For example,
/// [`StemSulPonticello`](crate::Glyph::StemSulPonticello) has a very narrow
/// width, and large negative side-bearings to accommodate the sul ponticello
/// sign that is centered on the stem.
///
/// See the [SMuFL documentation](https://w3c.github.io/smufl/latest/specification/glyphadvancewidths.html).
pub type GlyphAdvanceWidths = GlyphData<StaffSpaces>;