update_inverse_gamma_weibull

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function update_inverse_gamma_weibull(x:Real, k:Real, α:Real, β:Real) -> (Real, Real)

Update the parameters of an inverse-gamma distribution with a Weibull likelihood with known shape.

• x: The variate.
• k: Likelihood shape.
• α: Prior shape.
• β: Prior scale.

Returns: the posterior hyperparameters α' and β'.