Added DEFGENERIC form for COLOR-IMAGE-MAX-LEVEL.
Added DEFGENERIC form for COLOR-IMAGE-MIN-LEVEL.
Updated copyright and email address.
Added DEFGENERIC form for TELL-WINDOW-MANAGER-ABOUT-SPACE-REQUIREMENTS.
Added copyright and email address.
Fixed silly mistake.
Removed unused variable THUMB-SIZE and reference to slot with same name.
Added copyrights and email addresses.
Cleaned up old comment and added my own.
Removed commented-out code.
Cleaned up some top-level comments.
Removed commented-out function definition, now in gadgets.lisp