Manage the life cycle of your exported functions with shared conventions, documentation badges, and non-invasive deprecation warnings. The 'lifecycle' package defines four development stages (experimental, maturing, stable, and questioning) and three deprecation stages (soft-deprecated, deprecated, and defunct). It makes it easy to insert badges corresponding to these stages in your documentation. Usage of deprecated functions are signalled with increasing levels of non-invasive verbosity. WWW: https://cran.r-project.org/web/packages/lifecycle/