added bomb spread methods. not used, barelly tested :)
Merge branch 'master' of https://github.com/tdubourg/geobombing
Merge branch 'master' of https://github.com/tdubourg/geobombing
Merge branch 'master' of https://github.com/tdubourg/geobombing
bidouillage bombes/explosion. pas actif
Merge branch 'master' of https://github.com/tdubourg/geobombing
added explosion over graph
meeeeeergeee