add '#pragma once', call Vertex no-arg constructors, no double-destructor
add '#pragma once', call Vertex no-arg constructors, no double-destructor

alexfrolov/grappa,alexfrolov/grappa,buaasun/grappa,uwsampa/grappa,uwsampa/grappa,alexfrolov/grappa,uwsampa/grappa,uwsampa/grappa,uwsampa/grappa,alexfrolov/grappa,buaasun/grappa,alexfrolov/grappa,uwsampa/grappa,uwsampa/grappa,alexfrolov/grappa,buaasun/grappa,buaasun/grappa,buaasun/grappa,buaasun/grappa,alexfrolov/grappa,buaasun/grappa