skeleton chart complete
basic bubble chart showing with no axis
axis added
scales now take values from aes mappings
size and fill mappings now working
added alpha aesthetic
x and y can now be set through menu
alpha and size working
size, alpha and fill now going from mapped to unmapped without errors
defaults protected from outside changes
deleted aesthetic mapping from jgd3 object when not mapped
split geom_point from main script
corrected errors introduced when scripts were separated in prev commit
tooltip working with default x and y html
tooltips working now
aesthetics now set via properties