Regex crime's success chance
Regex crime's success chance

Not the greatest with regex, but should only allow 0-9, a-z, * ( ) / + -
now. Could take it a step further and allow text to *only* be "LEVEL,"
"EXP", "WILL", "IQ".

Should fix #88

MasterGeneral156/chivalry-engine,MasterGeneral156/chivalry-engine,MasterGeneral156/chivalry-engine