Changes in version 1.0.1 (2018-06-17) - Introduced option to scale sum-squared loss per subgroup by the subgroup sample size. This improves performance in situations with unbalanced groups. - Fixed warning caused by deprecated function in the Matrix package. Changes in version 1.0.0 (2017-08-17) First full release of fuser package for subgroup regression with fusion penalties. Features - L1 and L2 fusion penalized regression across heterogeneous subgroups. - Ability to deal with high-dimensional datasets (tens of thousands of covariates). - C implementation for additional speed gains.