add sponsor link
open sponsor link in new tab when iframe embedded
add sponsor hide button to allow clean display
change sponsor
actually, hide the sponsor
upgrade underscore.js to 1.6.0
major refactor to replace grids module with products module, which consolidates a lot of randomly placed behavior into one location, clustered around product definitions
Issue #12: Incorrect symbol usage
change to use actual "degrees" sign.
create a map of all product factories so they can be referred to by name
use smaller delta for finite difference estimates to avoid animation artifacts on some projections
move server-specific logic to a separate repository
style tweak
some DOM tweaks
some DOM tweaks
yet more DOM tweaks
add new layers: air density, wind power density, relative humidity
instead of clearing them, update the location details when the field changes
update readme
update readme