The main index is docs/index.html
Merge branch 'version/1.9' into version/2.0

* version/1.9:
  The main index is docs/index.html
Merge branch 'version/2.0' into version/2.1

* version/2.0:
  The main index is docs/index.html
Merge branch 'version/2.1' into version/2.2

* version/2.1:
  The main index is docs/index.html

Conflicts:
	docs/scripts/index.html