added wooden link door fitting in trees
dont crash if a snapshot cant be loaded, go to the main menu instead
added output style for distinguishing snapshot and map saves
updated map;
Moving map always when middle mouse button is pressed!
added switches that deactivate after a certain time
added support for old switch defines in map
added 3x3 pen when shift pressed
fixed bug when saving new endangered tiles
removing endangered tile flag if TT_NONE is the endangered tile;