------------------ * Added argument for degrees of freedom of spline
0.3.1
------------------ * Centered spline for interpretable intercept
0.3.0
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* Added spline, fixed slope and quadratic models for calculating guide residuals * Combined z-scores by square root of sample size rather than re-calculating z-scores
0.2.5
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* Add base LFC to dLFC output
0.2.4
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* Add model coefficients to guide residual ouput * Update delta-LFC functions