*****Release of TH 1.0*****

Changed the buttons to menus. Now Help and Quit are under the Misc. menu. The
Teach button has been replaced by a menu, and various types of Teaching are
listed under the menu (they vary for different hypertools). The Source menu now
lives with the other menus, and they all live in a menubar on top of the window.
The output text now lives below the menubar, and the hypertool-specific other
stuff live below the output text.

