Uncertain polyline and heatmap plots

Breaking changes in API:

• Polyline plot:
  • data.y passed to draw can be uncertain, the plot renders bands for the quantiles (see samples/Uncertain polyline.html);
  • function or trajectory mode determines whether input points will be ordered or not.
• Heatmap plot:
  • Argument of draw now contains property values instead of f. Values may be uncertain.
  • Introduces new property of draw data, interval which allows to highlight region containing uncertain data interseting with the interval.

New features:

• Export to SVG: figure, numeric axis and polyline can be exported to SVG. Uses SVG.js. See method Plot.exportToSvg() and the sample Vector export.
• Nice real numbers formatting in tooltips, probes and legend.
• Tooltips and probes share same content. The content is refactored for the markers and heatmaps.

Fixes:

• Legend doesn't stop propagation of mouse and touch events by default so it can be made draggable if needed.

New appearance

• Updated UI:
  • ChartViewer legend is now on the right and is hidden by default
  • Navigation panel is updated, in particular, it allows showing and hiding the legend
  • Increased axes titles font size and added margin for the vertical axis title
• Fixes bug which prevented reordering of plots having same name

Updated markers API and revisited design

v1.2.0

Release 1.2.0