Ghost quest added

Released a new version for zx spectrum. Added underground pyramid where you can find ghost urn. Find a sword and use it on graveyard near different wall (fire2 button (default b) - destroy down wall or fire3 button (default n) destroy upper wall). You will encounter ghosts and mummies in pyramid. When you find a urn you learn 2 new spells that makes a changes in some places (buttons fire2 and fire3).