Inklet 4.9.0

Found recreating ten figures from six landmark open-access Nature papers
(JWST WASP-39b, ATLAS Higgs, KATRIN, human height GWAS, brain-wide
association studies, WHO excess mortality), now in examples/published/
with a faithful and an improved version of each.

Added

• i.preset(..., axes='box'): the journal frame of physics and astronomy
  figures. Panel.axes() closes the plot with unlabelled top and right
  axes, ticks point inward on all four sides with minor ticks between
  them, the frame, ticks and labels are black at 0.21 mm or more, and
  default data lines are as heavy as the frame. A heatmap gets the frame
  without ticks over its cells. axes='frame' closes the plot the same way
  but ticks only the labelled bottom and left axes, leaving the top and right
  edges plain, as JWST's figures do. The default, axes='open', is unchanged.
• Panel.contour(x, y, z, levels=... | hdr=(0.683, 0.954)) draws contours
  of a gridded field; hdr= gives highest-density regions enclosing those
  fractions of the total. inklet.plot.mass_levels takes a plain grid.
• Panel.hist(counts, bins=edges, prebinned=True) draws counts that are
  already binned, in either orientation and with density=True.
• Document.label(x=..., y=...) writes one axis title across a grid of
  cells, centred on their plot areas.
• Document.letters({'cell': 'a', ...}) sets panel letters by cell name, so
  a figure can skip letters (a, b, e, f) or match them to cells; unnamed
  cells take the next free letters.
• Panel.key_diagram() returns a panel's key as a diagram for an empty grid
  cell.
• hline, vline, hspan and vspan take name= and appear in the key
  with their own paint.
• errorbars(..., floor='arrow' | 'none'): on a log axis, a whisker whose
  bound is zero or below runs to the axis floor, by default with an open
  arrowhead, instead of raising.
• errorbars(stroke=[...]) and annotate(color=...): one colour per point,
  and one colour for a callout's words and leader.
• figure.report(expect={'SERIES_FLATTENED'}) (and lint(expect=...))
  acknowledges a diagnostic that is intended; it is listed apart and does
  not count as a problem. An unknown code raises.
• Lint codes: DATA_CLIPPED (info, points hidden by clip=True),
  MARKER_CUT (warning, a square or path marker cut at the plot edge),
  PLOT_WIDTH_OVERRIDDEN (warning, a plot drawn over 15% narrower than its
  authored width because it shares its rows), AXIS_TITLE_OVERHANG
  (warning, a y title that runs into another cell or off the page) and
  BAR_WIDTH_OUT_OF_SCALE (warning, bars wider than their axis, with the
  width's units).
• The agent guide says to set variables in italic (//m//_{ν}^{2} (eV^{2}))
  and to plot dates on a calendar axis rather than as decimal years;
  text() documents align=, anchor= and offset= exactly.

Changed

• scientific.nature sets tick labels and keys at 7 pt, the top of Nature's
  5–7 pt range and the size of Nature's own typeset figures; at 6 pt they read
  a size smaller than the published ones. Pass font_size=i.pt(6) to a crowded
  key.
• A second legend() call on a panel replaces the first key's options, as
  the guide said, instead of adding a second key.
• A band no longer puts its series first in the key when it is drawn before
  the series' line. Band swatches are the band's colour at its opacity.
• FONT_SUBSTITUTED is information, not a warning, when the substitute is
  metrically identical to the expected font (Liberation Sans or Arimo for
  Arial and Helvetica, Liberation Serif or Tinos for Times, Liberation Mono
  or Cousine for Courier New), and it is reported once per font pair.
• INCONSISTENT_STROKE counts only stroke widths the author set (axes,
  ticks, keys, colour bars and error-bar caps are the library's), and names
  each weight's role ("errorbars 'Data'", "axis spine").
• Thinned explicit ticks are reported once, by TICKS_DROPPED; the Python
  UserWarning is gone.
• Document.add() with column= but no row= raises when that column is
  free in the last row, instead of starting a new row and drawing the cells
  down a diagonal.
• A cell name with a space is refused at add() with the reason.

Fixed

• A y-axis title longer than its plot is tall no longer makes the plot
  taller: stacked strips keep one scale. The title overhangs, as
  matplotlib's does, and lint reports it only if it runs into something.
• An authored plot_spec width is kept when its row has room; when it does
  not, every authored width gives way only as far as it must, instead of
  all falling back to equal column shares.
• annotate(color=) failed at compile with a TypeError;
  errorbars(stroke=[...]) crashed the SVG writer; thinning explicit tick
  labels crashed compile with an AttributeError.
• A callout whose point lies outside the plot range stays inside the plot
  when a clear spot exists.
• Lint no longer counts blank or zero matrix cells as marks, so a label over
  an empty bin is not an overlap.
• An inset whose text was shrunk by inset(width=...) is reported with
  width=None as the fix, not a bigger font.
• legend(size=...) suggests font_size=; a top key wider than its cell is
  named as the cause of the LayoutError.
• A top or bottom key even slightly wider than its cell raised "plot
  furniture did not settle after 24 measurement passes"; the error now names
  the key, its width and the cell's, and the fix.
• Log axes with minor=True draw the 2–9 subdivisions when the sparser
  mantissas are all labelled.