Add more trade stats, plus rolling

median trade
max/avg/median consecutive wining/losing trades
trades/day, trades/week, trades/month, trades/quarter
subset (by date) trade stats. So a parameter of subset (which could be like subset="2013-01-01/2013-07-22") would enable to get the trade stats only for particular time frame.
rolling trade stats (or any other stats) to plot the stats through time (on a rolling basis, used as a backtest rule input - security selection for example)