Weighted derivatives premium BTC

Can be extended with more derivative or spot pairs, see the comments in the code for instructions. Most importantly, the pairs need to be added to the respective arrays in the same order, so that the weights are applied to the correct pairs.

เอกสารเผยแพร่:

fix na

เอกสารเผยแพร่:

small fix

เอกสารเผยแพร่:

smoothing added