Apply half-spread and commission on both open/close trade

Enhancement description

Hi,

Full spread is currently applied to buy price on trade open and open+close commission only on trade close. This doesn't reflect real life and affects backtesting stop loss/trailing stop loss trigger level. Also,, I'm using trade.pl_pct for trailing stop loss calculation and I have to subtract commission manually. It also leads to bad optimization.

The situation should be :

• trade open: apply half-spread on buy price and also apply commission
• trade close: apply half-spread on sell price and also apply commission

Thanks a lot!

Code sample

Additional info, images

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