"f" to fireball, "m" to place mine

AOE Projectiles/Traps
fireball/mine size change
Merge pull request #79 from John5025/master

"f" to fireball, "m" to place mine
Added Spell basic infrastructure
Merge pull request #80 from EnacheB/master

Added Spell basic infrastructure
Fixed a few spell-related errors
Merge pull request #81 from EnacheB/master

Fixed a few spell-related errors
Made Fireball into a spell, imporved spell casting and moved a prefab
Merge pull request #82 from EnacheB/master

Made Fireball into a spell, imporved spell casting and moved a prefab
Merge branch 'master' of https://github.com/Birdbrain2/Rougue
Destroy enemies when going to next floor