v0.0.7

Features

• Unanchored Cartesian legends now use content-aware placement when loc is set
  to "best". The initial static decision measures the legend against bounded
  line, area, scatter, bar, and annotation geometry, while the browser remeasures
  rendered pixels after responsive resize and settled view changes.
  Initial/static placement takes the exact minimum with canonical tie order; after
  the browser establishes a live winner, a five-percentage-point hysteresis keeps
  near-uniform views from making the legend hop, while an empty candidate still
  always beats an occupied one. Explicit locations, anchors, and polar legends
  remain fixed. (#496)

Bug Fixes

• Funnel labels no longer overlap on short vertical charts. Value labels sit
  at the stage centers and drop-off labels at the boundaries between them, so
  the two ladders interleave at half the stage pitch; both were budgeted
  against a whole one, and every pitch between one and two line heights piled
  them onto each other. The label ladder's plot-size estimate was also
  optimistic — it scaled the chart height by a fraction, while the title band,
  tick labels and margins actually cost a roughly fixed ~90px, so it claimed
  153px of a real 92px plot at height 180 and placed labels that could not
  fit. Cramped funnels now drop the derived drop-off percentage rather than
  print it over the stage value; the tooltip and event payload still carry
  every number, and roomy charts are unchanged. (#481)
• Bar hover tooltips no longer rewrite themselves and jump when the kernel's
  exact pick reply lands. The reply's row now follows the bar's orientation
  (band center on the position axis, value end on the value axis) and is mapped
  through the same display-value path as the local readout, so the refinement is
  invisible instead of swapping a category label for its code and dragging the
  anchor off the cursor. (#499)
• Charts left running under GPU pressure no longer flicker blank or stay gone
  until a page reload. Context-restore retries used to clear the presentation
  canvas before every rebuild attempt, so each transient failure wiped the last
  drawn frame; the canvas now resizes only when its dimensions actually change,
  keeping the last good frame on screen until a rebuild succeeds. And when a
  context stays "live" while every rebuild against it fails (a wedged driver),
  three consecutive failures now recycle the shared WebGL surface — rebuilding
  every chart on a fresh context, the in-page equivalent of the reload that was
  previously the only escape. A genuine context loss — including one arriving
  while a chart is still mid-retry from an earlier failure — resets that
  escalation counter, so ordinary loss/restore churn keeps taking cheap
  same-context retries. (#501)
• Charts no longer come back blank after the shared WebGL context budget
  released them while their tab was hidden. A released chart used to revive with
  restoreContext() on the same canvas, and Chrome can restore that context
  fully healthy — draws, readPixels, and picking all succeed — while never
  presenting the canvas element again, so the data layer stayed invisible under
  intact axes until a page reload. Governed releases now re-acquire the way a
  real eviction does: on a fresh canvas element, rebuilt from the retained spec
  and payload.
  Gestures follow the chart onto that fresh canvas: wheel zoom, drag, and hover
  read their geometry from the live canvas rather than the one they were first
  bound to, which previously sent a zoom after any context rebuild to infinity. (#503)

Miscellaneous

• Releases are now driven by CHANGELOG.md instead of by a hand-cut git tag.
  Contributors add a towncrier news fragment
  under news/ (make news NAME=1234.feature.md), the Dispatch release
  workflow materializes the pending fragments into a version section, and merging
  that pull request publishes: the release matrix builds every wheel, the sdist
  and the runtime-verified PyEmscripten wheel, a human approves the single
  credentialed upload job, and only a successful upload creates the tag and the
  GitHub release. CHANGELOG.md is generated from that point on — version
  headings are no longer written by hand. (#498)