Lights from the wizards

Green lights emanating from the wizards
A spotlight on the player
Easily accessible light switches

Booleans in P that determine whether to use lights for windows,
torches, wizards and the player spotlight
Small fixes to wizard rotation and level

Wizard now looks at player better. The double-jump-reachable powerup is
now never followed by a platform too high. The starting platforms are
now long without jumps again.