optimization and sharperatio and periodstats analyzers

[momentum]

Hi,

when I am using SharpeRatio or PeriodStats analyzers with optimization, I get the following error

TypeError: __init__() missing 9 required positional arguments: 'status', 'dt', 'barlen', 'size', 'price', 'value', 'pnl', 'pnlcomm', and 'tz'

Both analyzers are based on TimeReturn which does not give any error if added as analyzer.

Any feedback would be really helpful.

Thanks

[André Tavares]

Include the code in TradeHistory Class:

def __reduce__(self):
    return (self.__class__, (self.status.status, self.status.dt, self.status.barlen, self.status.size,
                             self.status.price, self.status.value, self.status.pnl, self.status.pnlcomm,
                             self.status.tz,))