Update lifecycle

README.md

@@ -1,6 +1,6 @@
 
 <!-- badges: start -->
-[![Lifecycle: stable](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html#experimental)
+[![Lifecycle: stable](https://img.shields.io/badge/lifecycle-stable-brightgreen.svg)](https://lifecycle.r-lib.org/articles/stages.html#stable)
 [![Project Status: Active - The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![Code size](https://img.shields.io/github/languages/code-size/sfcheung/betaselectr.svg)](https://github.com/sfcheung/betaselectr)
 [![Last Commit at Main](https://img.shields.io/github/last-commit/sfcheung/betaselectr.svg)](https://github.com/sfcheung/betaselectr/commits/main)