include all files in namespace cura and standardize spelling
include all files in namespace cura and standardize spelling

alex1818/CuraEngine,mspark93/CuraEngine,alephobjects/CuraEngine,fxtentacle/CuraEngine,alephobjects/CuraEngine,fxtentacle/CuraEngine,patrick3coffee/CuraTinyG,uus169/CuraEngine,pratikshashroff/pcura,totalretribution/CuraEngine,markwal/CuraEngine,markwal/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,alex1818/CuraEngine,Ultimaker/CuraEngine,uus169/CuraEngine,totalretribution/CuraEngine,pratikshashroff/pcura,fxtentacle/CuraEngine,alex1818/CuraEngine,totalretribution/CuraEngine,patrick3coffee/CuraTinyG,mspark93/CuraEngine,patrick3coffee/CuraTinyG,uus169/CuraEngine,ROBO3D/CuraEngine,Ultimaker/CuraEngine,markwal/CuraEngine,mspark93/CuraEngine,ROBO3D/CuraEngine,pratikshashroff/pcura