Changes in version 1.2.0 (2023-10-24) - Added functionality to sample speciation- and extinction rates jointly (work by Andréoletti & Morlon 2023, Methods in Ecol & Evol) Changes in version 1.1.0 (2022-06-20) - Re-named package to CRABS: Congruent Rate Analyses in Birth-death Scenarios - Now using ODE solver as default to construct congruent models when proposing extinction rate Changes in version 1.0.0 - The initial release of ACDC: Analyses of Congruent Diversification Classes on the CRAN R-package repository system.