What's Changed

• Add default_fallback() for survival and density learners
• Support validation task transformation in some PipeOps (PEM/DiscTime) by @bblodfon in #439
• Migrate Competing Risks code to mlr3cmprsk by @bblodfon in #444
• coxed package was removed from CRAN so now we install the latest working CRAN version (0.3.3) from GitHub
• Renamed .surv_return() to surv_return() as it is exported and used by other packages (e.g. mlr3extralearners)
• Update mlr3 at v1.2.0 and mlr3misc at v0.19.0