Add severity to alpha.cplusplus.PlacementNew
"alpha.cplusplus.EnumCastOutOfRange": "MEDIUM",
"alpha.cplusplus.IteratorModeling": "MEDIUM",
"alpha.cplusplus.IteratorRange": "MEDIUM",
+ "alpha.cplusplus.PlacementNew": "HIGH",
"alpha.cplusplus.UninitializedObject": "MEDIUM",
"alpha.deadcode.UnreachableCode": "LOW",
"alpha.llvm.Conventions": "LOW",
