monogame-0001: IntermediateWriter.WriteSharedResources writtenSharedResources
List<string>.Contains in while loop O(R^2), fix: HashSet<string> MEDIUM
monogame-0002: IntermediateSerializer._scannedObjects List<object>.Contains
per object during scan O(N^2), fix: HashSet<object> MEDIUM
monogame-0003: OpenAssetImporter._bones List<Node>.Contains in recursive
tree import O(N*B), fix: HashSet<Node> MEDIUM
MOAD-0002 through 0005: CLEAN (single-threaded game framework, no secrets,
no leaked context, no thundering herd)
