v4.7

• Add Design Elevation line to stationing demo chart.
• Add Lodestar Info Window plugin and demo page.
• Legend/Legend Entry:
  • Add Outline Color attribute to Legend Entry item.
  • Expand Layer Item attribute to accept WMS and ArcGIS REST items.
  • Add spinner when a layer is loading.
  • Gray out entries when outside the layer's zoom range.
• Lodestar Layer:
  • Add waitForLoad, getLayerIDs, and getMap methods to JavaScript API.
  • Add generateId: true to source options when no ID column is given
  • Expand Outline Color to all layer types
  • Add pointer cursor when the layer has an associated Info Window.
• WMS Layer:
  • Add visibility_toggled, load_start, and load_end events.
  • Add item API with show(), hide(), and isVisible().
• ArcGIS REST Layer:
  • Add visibility_toggled, load_start, and load_end events.
  • Add item API with show(), hide(), and isVisible().
• Geocode DA:
  • Trigger "Draw/Create" event on the drawing item
• Basemap:
  • Fix issue where a Basemap plugin item inside a form region could trigger
    a 500 Internal Server Error from APEX if the form was submitted.