Entities you can step onto, invisible entities, etc.
Only add entity to raycaster if it has a sprite
remove a check
testing a check if sound is playing before playing the "message sound"
Tweak the size of the message box again
Make "talk scripts" fire intantly rather than possibly waiting an
entire logic step.
Make some functions in entity virtual
update virtual
Chests
updated readme
Default constructor for trap
Trapped chests