Override rollMoveHit to add 1/256 miss chance

line 287 is the key line. essentially made it roll a random number up to 100.4
(100 + (1/256) such that there is an extra 0.4% chance to miss on all moves 
except things that ignore the accuracy check (swift)
edit the formula

changed it such that move accuracy and the 1/256 chance are seperate checks
Merge pull request #2 from MJB47/patch-16

Override rollMoveHit to add 1/256 miss chance