clean code of MainLayer
optimize telescope related code
telescope will not find treasure under building, hero, facility
treasure can be placed in building
treasure can be placed in emtry
adjust rules of recovering hp in duel
adjust bonus_morale
main castle can be attacked at anytime, offenser will win if treasure is found
adjust cost_morale of clues
adjust formula of calculating loss of soldiers/hp of hereos because of move
dead offensive heroes will not appear in duel
occupy a tile will not expose treasure
add explore function
update version info