Mark `format_string` and `format_file` with `public`

CHANGELOG.md

@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 ### Added
  - New command line argument `--verbose` which enables verbose output ([#121]).
+ - The library functions `Runic.format_file` and `Runic.format_string` are now considered
+   part of the Runic public API and are marked with `public` in supported Julia versions.
+   ([#127]).
 ### Changed
  - Runic is now silent by default. Use `--verbose` to enable the verbose file progress
    printing from previous releases ([#121]).

src/Runic.jl

@@ -2,6 +2,12 @@
 
 module Runic
 
+if VERSION >= v"1.11.0-DEV.469"
+    let str = "public format_file, format_string"
+        eval(Meta.parse(str))
+    end
+end
+
 using JuliaSyntax:
     JuliaSyntax, @K_str, @KSet_str