Changes in version 0.2.0 (2026-06-24)                  

  - Thin (sub-pixel-width) polygons no longer flicker in and out across
    zoom levels (#13). A polygon that collapses on a tile's integer
    pixel grid is now replaced by a one-pixel square at its centroid
    instead of being dropped, so narrow features stay continuously
    visible. Ring winding is also normalized to the MVT specification
    (exterior rings positive area, interior rings negative), zero-area
    degenerate rings are dropped rather than emitted as invalid
    polygons, and quantization-induced spikes (out-and-back needle
    vertices) are removed.
  - freestile_h3() is a new function for dynamic hexagonal binning. It
    aggregates points into H3 hexagons at zoom-appropriate resolutions
    via DuckDB's H3 community extension and writes a multi-layer
    .pmtiles archive where low zooms show coarse hexes, intermediate
    zooms show progressively finer hexes, and zooms at or above
    base_zoom show the raw points. Aggregation rules are user-defined
    SQL expressions (e.g. c(n = "COUNT(*)", avg_pop = "AVG(pop)")).
    Opt-in fade = TRUE produces overlapping zoom windows so adjacent hex
    resolutions can cross-fade visually.
  - view_h3_tiles() is a companion viewer that auto-styles a
    freestile_h3() archive in mapgl, detecting clean-break vs cross-fade
    mode from the PMTiles metadata.
  - Hexagons that cross the antimeridian are split at +/-180 degrees
    rather than rendering as world-spanning slivers.
  - See vignette("h3-hexagonal-binning") for a walkthrough.

                 Changes in version 0.1.7 (2026-05-12)                  

  - Updated the CRAN Rust build path to use a dependency graph
    compatible with rustc/cargo 1.77.2.

                        Changes in version 0.1.0                        

Initial release.

Tile generation

  - freestile() creates PMTiles archives from sf data frames with zero
    external dependencies (no tippecanoe, no Java, no Go).
  - Supports MapLibre Tiles (MLT) and Mapbox Vector Tiles (MVT) output
    formats.
  - Multi-layer output via named lists or freestile_layer() per-layer
    zoom control.

Geometry types

  - POINT, MULTIPOINT, LINESTRING, MULTILINESTRING, POLYGON,
    MULTIPOLYGON.
  - Automatic CRS transformation to WGS84.
  - Z/M dimension handling (dropped automatically).

Performance features

  - Parallel tile encoding with rayon (across tiles and within tiles).
  - Tile-pixel grid snapping for zoom-adaptive simplification without
    slivers.
  - Buffered tile assignment and clipping for seamless tile boundaries.

Feature management

  - drop_rate exponential feature thinning with Morton-curve spatial
    ordering for points and area-based ordering for polygons/lines.
  - base_zoom control for ensuring all features present at higher zooms.
  - cluster_distance point clustering with point_count attribute.
  - coalesce line merging and polygon grouping.

MLT encoder

  - Spec-compliant MapLibre Tile encoder with varint, delta, RLE, and
    dictionary encoding.
  - Validated against mlt-core 0.1.2 reference decoder.