\ \'95 1.2\ 2008\'962009: Creation\ \'95 1.3\ 2010\'962012: Early growth\ \'95 1.4\ 2013\'962014: First regulatory actions\ \'95 1.5\ 2015\'962019\ \'95 1.6\ 2020\'96present\ \'95 2\ Design\ \ \ \ \ \ Toggle Design subsection\ \ \ \ \ \ \ 2.1\