Add overflow tests provided by DaWoblefet
Add overflow tests provided by DaWoblefet

Also split up commented out test

MagiaSN/honko-damagecalc,Zarel/honko-damagecalc,MagiaSN/honko-damagecalc,MagiaSN/honko-damagecalc,Zarel/honko-damagecalc,Zarel/honko-damagecalc