Changes for version 2.18

  • Fix Line's shape attribute, which didn't do a damn thing
  • Draw Line's shapes in a separate loop so that the path works right
  • Remove Chart::Clicker::Shape
  • Add OverAxis Decoration
  • Add Clicker->over_decorations for adding decorations "over" the renderers
  • POD overhaul
  • Remove some long-commented-out code.