public Opinion(DateTime date, string signal, string company, string expert, string opinionString, decimal price, string symbol)
{
Date = date;
Signal = signal;
Company = company;
Expert = NameHelpers.Normalize(expert);
OpinionString = opinionString;
Price = price;
Symbol = symbol;
}
public Guest(string name, DateTime date)
{
Name = NameHelpers.Normalize(name);
Date = date;
}