Version bump

Bump the version by changing the version number in the help text.

Include some documentation improvements in this commit (focussed on
clarity, brevity, and consistency), as well as an ordering fix in the
source code.

CONTRIBUTING.md

@@ -176,7 +176,7 @@ just ci-build
 
 ### Formatting
 
-This project is formatted using rustfmt. Ensure all changes you commit are formatted. To format
+This project is formatted using [rustfmt]. Ensure all changes you commit are formatted. To format
 the source code run the command:
 
 ```shell
@@ -284,7 +284,7 @@ commands:
 just coverage
 ```
 
-This will generate a coverage report that can be found in the `_reports/coverage/` directory.
+This will generate a coverage report which can be found in the `_reports/coverage/` directory.
 
 If necessary you can configure the feature set to test using the `features` variable to adjust the
 build, for example:
@@ -304,22 +304,15 @@ command:
 just mutation
 ```
 
-This will generate a mutation report in that can be found in the `_reports/mutants.out/` directory.
+This will generate a mutation report which can be found in the `_reports/mutants.out/` directory.
 
-You can configure the feature set to test using the `features` variable. This can be used to speed
-up mutation testing if you're only interested in a particular piece of functionality. For example:
+If necessary you can configure the feature set to mutation test using the `features` variable to
+adjust the build, for example:
 
 ```shell
 just features=gnu-mode mutation
 ```
 
-You may need to use the `test_features` variable to catch all mutants since some functionality has
-no or limited coverage without these. For example:
-
-```shell
-just test_features=test-trash mutation
-```
-
 #### Special Tests
 
 ##### `--trash` Tests

README.md

@@ -129,7 +129,7 @@ The development of this software is guided by the following principles:
 
 - Defaults should be safe.
 - Program output is for humans.
-- Help the user to achieve what they want.
+- Help the user achieve what they want.
 
 ### Sources of Inspiration
 

src/main.rs

@@ -38,7 +38,7 @@ mod cli {
     #[cfg(test)]
     use proptest_derive::Arbitrary;
 
-    /// Remove (unlink) the PATH(s) - v23.04
+    /// Remove (unlink) the PATH(s) - v23.06
     ///
     /// Does not remove anything by default, use either the option --force or --interactive to
     /// perform the removal.
@@ -759,13 +759,13 @@ mod cli {
         }
     }
 
+    /// A standard environment variable name to enable verbose mode.
+    const DEBUG_MODE: &str = "DEBUG";
+
     /// The environment variable name to enable compatibility mode with the GNU version of `rm(1)`.
     #[cfg(feature = "gnu-mode")]
     const GNU_MODE: &str = "RUST_RM_GNU_MODE";
 
-    /// A standard environment variable name to enable verbose mode.
-    const DEBUG_MODE: &str = "DEBUG";
-
     /// Struct representing parsed environment configuration values.
     #[cfg_attr(test, derive(Arbitrary, Clone, Copy, Debug))]
     pub struct Vars {