Pivots library

Library "Pivots"
TODO: add library description here

pivots(_type, _open, _high, _low, _clsoe) Calculates the pivot point and returns its value.
  Parameters:
    _type: Specifies the type of pivot point.
    _open: The open price
    _high: The high price
    _low: The low price
    _clsoe: The close price
  Returns: Returns the value of the calculated pivot point as a tuple.

cpr(_high, _low, _clsoe) Calculate the Central Pivot Range
  Parameters:
    _high: The high price
    _low: The low price
    _clsoe: The close price
  Returns: Returns the values as a tuple.

htf_ohlc(_htf) Calculate the HTF values
  Parameters:
    _htf: Resolution
  Returns: Returns the values as a tuple.

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Added sample codes.

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v3: Added HTF sample.

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v4: Added pivot types ('Classic', 'DM', 'Camarilla', 'Expected Pivot Points').

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v5

- Added a pivot types "Floor" and "Tom DeMark's Pivot"

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v6
Added "PP only" options.

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v7

added a type 'HL2'

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v8

added a type "Zone Analysis"

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v9

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v10

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v11
added an option "OC2"