installing epiphany-extensions does nothing

[Levi Waldron <onemorenut@gmail.com>]

I use epiphany under Gnome 2.6.12 in Debian Testing, and just installed
epiphany-extensions, wanting to use some of its neat features like
middle-click to scroll down web pages.  Installing
epiphany-extensions (apt-get epiphany-extensions) has no effect on the
epiphany-browser, and there are no clues in /usr/share/doc for either
package or in the epiphany-extensions help page on the gnome.org
website.  How do I activate the extensions?

thank you