Rolling midpoints

The script made for research purposes which plots these statistics of a given window: Mid-range (max + min)/2, Lower midpoint (mid-range + min)/2, and Higher midpoint (mid-range + max)/2.
This could be interesting when checking periods with sample size <= 0, or checking distros with srs kurtosis values.

Mean & median are also there.

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Rolling window minimum & maximum addes

Don't forget to check Log-space if you use logarithmic scale.

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The complete version

Now you can choose mid-range, mean or median as basis, will result diving the distance between chosen basis and extremums of rolling window

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Trimean L-estimator was added as basis for research purposes (disabled by default)

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New:
- All data switch;
- OTF functionality.

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New:
- "High & low" option allows to make calculations based on lowest lows and highest highs.