KeyFrame prototyping and fixes!
 * Fixed Issue #81 - https://sourceforge.net/p/kage/tickets/81/
 * Fixed Issue #82 - https://sourceforge.net/p/kage/tickets/82/
 * Fixed Issue #83 - https://sourceforge.net/p/kage/tickets/83/
 * Implemented #71 - https://sourceforge.net/p/kage/tickets/71/
 * Implemented #72 - https://sourceforge.net/p/kage/tickets/72/
 * Implemented #78 - https://sourceforge.net/p/kage/tickets/78/
 * Implemented #79 - https://sourceforge.net/p/kage/tickets/79/
 * Implemented #80 - https://sourceforge.net/p/kage/tickets/80/
 * Implemented #84 - https://sourceforge.net/p/kage/tickets/84/
 * updated Tween Frame image files
 * deleted un-used images files
 * added Kage icon file and Kage Document file