DegreeALine

Library "DegreeALine"
TODO: add library description here

Degree(x1, y1, x2, y2)
  TODO: add function description here
  Parameters:
    x1: First X coordinate of a line, index of the bar where the line starts.
    y1: First Y coordinate of a line, price on the price scale.
    x2: Second X coordinate of a line, index of the bar where the line ends.
    y2: Second Y coordinate of a line, price on the price scale.
  Returns: Degree Of Line