[pshaiCmd] SuperTrend

SuperTrend indicator.

Command uses ClosePrices, HLPrices and High/LowPrices built-in, so no price data cannot be inputted.

Input paramaters:
* atrPeriod : ATR period length (for example 22)
* atrMult : ATR multiplier (for example 3)
* [wicks] : Whether to take wicks into account or not (default is false)

Output:
* SuperTrend line values

**NOTE**: The command does not handle any plotting nor does it produce any signals!

Example of usage:

local c = ClosePrices()
local st = CC_SuperTrend(22, 3)

local upperId = Load('uid', NewGuid())
local lowerId = Load('lid', NewGuid())

if st < c then
    upperId = NewGuid() -- reset upper id
    Plot(0, 'Long Stop', st, {c=Green, id=lowerId})
    -- DoBuy()
else
    lowerId = NewGuid() -- reset lower id
    Plot(0, 'Short Stop', st, {c=Red, id=upperId})
    -- DoSell()
end

Save('uid', upperId)
Save('lid', lowerId)