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• subgraph support (issue #8 / PR #16)
• restored Style::Invisible (regression vs 0.1.4)
• BREAKING: as_slice() renamed to as_str() on Style, Id, Fill, Side
• edition 2024, warning-free build (clippy + rustdoc)
  See CHANGELOG.md for details.

This release contains breaking API changes relative to 0.1.4, hence the minor version bump.

Breaking changes

• as_slice() was renamed to as_str() on Style, Id, Fill and Side. Replace x.as_slice() with x.as_str().
• Arrow::default() is no longer an inherent method; Arrow now derives Default. Existing Arrow::default() call sites keep working via the Default trait, but the method can no longer be referenced as an inherent function (e.g. in a path expression expecting an inherent item).
• The crate now uses edition 2024, which requires a recent Rust toolchain.

Added

• Subgraph support (#8, #16): Labeller::subgraph_id, subgraph_label, subgraph_style, subgraph_shape, subgraph_color and GraphWalk::subgraphs, subgraph_nodes. The Labeller/GraphWalk traits gained a subgraph type parameter which defaults to (), so existing implementations continue to work unchanged.
• RankDir::as_str().

Fixed

• Restored Style::Invisible (rendered as style="invis"), which was present in 0.1.4 but got lost during the subgraph merge.
• Cleaned up all clippy and rustdoc warnings; the crate now builds warning-free.

• releasing 0.1.4

• Added invisible style.
• Various fixes; see the git history.