Create version 0.10.3 re-exporting version 1

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "self_cell"
-version = "0.10.2"
+version = "0.10.3"
 authors = ["Lukas Bergdoll <[email protected]>"]
 edition = "2018"
 license = "Apache-2.0"
@@ -21,14 +21,11 @@ include = [
 ]
 
 [dependencies]
-rustversion = { version=">=1", optional=true }
-
-[dev-dependencies]
-once_cell = ">=1"
+self_cell = "1"
 
 [features]
 # This optional feature lowers the minimum rustc version from 1.51 to 1.36.
 # However this requires polyfilling std library functionality for older rustc
 # with technically UB versions. Testing does not show older rustc versions
 # (ab)using this. Use at
-old_rust = ["rustversion"]
+old_rust = ["self_cell/old_rust"]

README.md

@@ -2,6 +2,13 @@
 [<img alt="crates.io" src="https://img.shields.io/badge/dynamic/json?color=fc8d62&label=crates.io&query=%24.crate.max_version&url=https%3A%2F%2Fcrates.io%2Fapi%2Fv1%2Fcrates%2Fself_cell&style=for-the-badge&logo=rust" height="20">](https://crates.io/crates/self_cell)
 [<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-self__cell-66c2a5?style=for-the-badge&logoColor=white&logo=data:image/svg+xml;base64,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" height="20">](https://docs.rs/self_cell)
 
+# Note on version 0.10.3
+
+This version of `self_cell` is a re-export of the `self_cell` version `1`
+meant for backwards-compatibly allowing `0.10` users to get current and
+future soundness fixes. If you are adding `self_cell` as a dependency,
+please use an up-to-date version directly.
+
 # `self_cell!`
 
 Use the macro-rules macro: `self_cell!` to create safe-to-use self-referential