[K] Bitfinex Longs and Shorts

Plots the difference between longs and shorts on bitfinex.

リリースノート:

Removed unused var and taking a better shot for the script page.

Plots difference between bitfinex longs and shorts.

リリースノート:

The longs and shorts are plotted on top of each other and the difference is filled with green if longs are higher and red if shorts are higher. All values are accurate as they are unchanged, simply plotted and colored.