anchor.diff:  
   === sequence Parameters
   
  -//TODO 7.1 - fill in details of Parameters
  +//TODO fill in details of Parameters
   * `length`
   * `start`
   * `stride`
  
positive.code: 
  == polyFit
  
  The `polyFit` function performs polynomial curve fitting (https://en.wikipedia.org/wiki/Curve_fitting#Fitting_lines_and_polynomial_functions_to_data_points).
  
  === polyFit Parameters
  
  * `numeric array` : (Optional) x values. If omitted a sequence will be created for the x values.
  * `numeric array` : y values
  * `integer` : (Optional) polynomial degree. Defaults to 3.
  
  === polyFit Returns
  
  numeric array : curve that was fit to the data points.
  
  === polyFit Syntax
  
  
negative.code: 
  == spearmansCorr
  
  The `spearmansCorr` function returns the https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient[Spearmans Rank Correlation] of two numeric arrays.
  
  === spearmansCorr Parameters
  
  