Use decimal for Oanda OrderFillQuantity conversion (#5571)
Use decimal for Oanda OrderFillQuantity conversion (#5571)

* Use decimal for Oanda OrderFillQuantity conversion

* Use decimals for all order values
jameschch/Lean,QuantConnect/Lean,jameschch/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,jameschch/Lean,StefanoRaggi/Lean,jameschch/Lean,JKarathiya/Lean,QuantConnect/Lean,QuantConnect/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,JKarathiya/Lean,AlexCatarino/Lean,JKarathiya/Lean,QuantConnect/Lean,StefanoRaggi/Lean,JKarathiya/Lean,StefanoRaggi/Lean,jameschch/Lean