Document limit_price and fee substraction

[gitmalong]

Hi!

I am unclear how the limit_price is exactly calculated when coming from a minimum out amount.

Is it minimum_out / amount_in rounded to u32::max(source_mint_decimals, destination_mint_decimals) and then converted to an integer by assuming destination_mint_decimals?

Does the feed need to be subtracted before from minimum_out?

Is the fee always taken from certain stablecoins and always from the source token?

Thanks