0.29.0

• feat(glyphs): accept colorbar=ColorBar on every glyph, plus label_location validation and colorbar=True reset (#244)

• Follow-ups to the ColorBar spec (#234/#235) that make it work package-wide
  and harden two edges.

  • Move ColorBar, _resolve_colorbar, _swatch_text_default,
    _warn_deprecated_cbar_kwargs, and _DEPRECATED_CBAR_KWARGS into a lean,
    glyph-independent cleopatra.colorbar module, re-exported from array_glyph
    for back-compat.
  • Wire a colorbar: bool | ColorBar | None parameter into MeshGlyph (plot and
    animate), FlowGlyph, KDEGlyph, ScatterGlyph, PolygonGlyph, and VectorGlyph;
    each merges the resolved spec into its options and deprecates the loose
    cbar_* kwargs. Non-breaking: existing add_colorbar params and MeshGlyph's
    colorbar bool toggle keep working, and the merged spec is sticky like
    ArrayGlyph (colorbar=True resets, False suppresses).
  • Reject an orientation-incompatible label_location up front (and at render,
    against the resolved orientation, for the unpinned case) instead of crashing
    in matplotlib; drop the invalid baseline/center_baseline label positions.
  • Make colorbar=True reset the whole caption/sizing cbar_* family to defaults
    on a reused glyph, and honour a ColorBar(ticks_spacing=...) spec on
    MeshGlyph rather than auto-overwriting it.

  Closes #239, #241, #242