Increment version to 0.4.2

Release 0.4.2 fixes bug #55, improves the CLI documentation,
and adds `--text` as the new default for `--toml`.
Updates the README.md and version numbers.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "xshe"
-version = "0.4.1"
+version = "0.4.2"
 edition = "2021"
 description = "Set environment variables across multiple shells with a single configuration file."
 readme = "README.md"

README.md

@@ -16,20 +16,22 @@
 
 <!-- Make sure this is commented on release -->
 
+<!--
 <div align=center>
 
   ---
 
   The branch `main` is ahead of the current release.
   If you are looking for the documentation for the latest released version,
-  [switch to the `0.4.1` release branch](https://github.com/superatomic/xshe/tree/v0.4.1),
+  [switch to the `0.4.2` release branch](https://github.com/superatomic/xshe/tree/v0.4.2),
   or view the documentation on [Lib.rs][lib.rs] or [Crates.io][crates].
   
   ![GitHub commits since latest release (by date)](https://img.shields.io/github/commits-since/superatomic/xshe/latest/main)
 
   ---
 
 </div>
+-->
 
 
 `xshe` allows for setting <u>Sh</u>ell <u>E</u>nvironment Variables across multiple shells with a single TOML
@@ -311,7 +313,7 @@ additional terms or conditions.
 
 [gh release]: https://github.com/superatomic/xshe/releases/
 [gh release latest]: https://github.com/superatomic/xshe/releases/latest
-[gh release new]: https://github.com/superatomic/xshe/releases/tag/v0.4.1
+[gh release new]: https://github.com/superatomic/xshe/releases/tag/v0.4.2
 [release workflows]: https://github.com/superatomic/xshe/actions/workflows/release.yml
 
 [Cargo]: https://doc.rust-lang.org/cargo/