• Move planet group (<g>) creation to a template
• Add planet-X class to all aspect and antiscia lines so they can be hidden
later one by one
• Move houses to their separate group
• Chart base is now a separate group, as it was intended
• Move from value_name to value_nick. It's shorter and makes using the
substring function obsolete
• Antiscion lines got their own class
• Move away from visibility to display attribute. visibility in SVG can
can be overridden, thus switching between aspects and antiscia cannot
be done if the future display themes tamper with the lines’ visibility
style