This is a port of Forecaster from Chen & Kipping (2016) from the original Python 2 script, which can be found here, into Julia.
This script predicts a planetary radius for a given mass (or vice-versa), taking into account measurement uncertainties, model-fitting uncertainties, and an intrinsic radius dispersion. Please read the original paper for more details.
Still a work in progress, feel free to open an issue if you find any bugs.