implemented Blood Imp
implemented Demolisher

Also implemented the Mech minion type in anticipation of Goblins vs
Gnomes
implemented Bloodsail Raider and Bloodsail Corsair

Introducing the pirate class
Implemented Frost Elemental
Implemented Hogger
Implemented Master Swordsmith
GUI card selection bug fix
implemented Lightwell
implemented Doomguard
implemented Nat Pagle

with some additional code clean up
Merge branch 'master' of https://github.com/oyachai/HearthSim