Language extensions
===================
Many (right now all) of these won't export anything to Go, and should be
included using "_".
e.g.
import _ "github.com/bobappleyard/ts/ext"
That package there is actually a package that includes all the extensions. If
you want to control which packages are available to the runtime, use the same
method but on individual extensions.
e.g.
import _ "github.com/bobappleyard/ts/ext/web"
This only uses the web extension to the language.