add early release warning

README.md

@@ -54,4 +54,8 @@ Currently only git is supported. Other version control systems can be added by i
 ## Minimum Supported Rust Version (MSRV)
 
 This crate is guaranteed to compile on stable Rust 1.59.0 and up. It *might*
-compile with older versions but that may change in any new patch release.
+compile with older versions but that may change in any new patch release.
+
+## Early release
+
+This project is still in early release phases. It should be safe to use but there's always a possibility of bugs which could result in workspace repositories ending up in an odd state.