v2.0.0

Use {packer} to manage JavaScript assets
Refreshment of functionalities, including:

• colors are managed in R with functions such as scales::col_numeric()
• tooltip is created with a {glue} string
• Legend is created as a CSS gradient
• Select menu in markdown can be positioned independently of the cartogram

Old release using cartogram.js

Previous release using cartogram.js directly. New version using cartogram-chart wrapper comming