Move changelog for mdbook-i18n-helpers

We will soon add another crate to the workspace (#80). The new crate
is a mdbook backend, which can be used to enhance mdbook-i18n-helpers.
The backend isn’t strongly tried to mdbook-i18n-helpers. It therefore
makes sense to give the new crate its own version numbers and its own
changelog file.

Author: mgeisler

README.md

@@ -41,7 +41,8 @@ Please see [USAGE](i18n-helpers/USAGE.md) for how to translate your
 
 ## Changelog
 
-Please see [CHANGELOG](CHANGELOG.md) for details on the changes in each release.
+Please see the [i18n-helpers/CHANGELOG](CHANGELOG) for details on the changes in
+each release.
 
 ## Contact
 

CHANGELOG.md renamed to i18n-helpers/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-This lists the most important changes between releases.
+This lists the most important changes between releases of mdbook-i18n-helpers.
 
 ## Version 0.2.4 (2023-09-27)
 

i18n-helpers/README.md

@@ -22,8 +22,8 @@ Please see [USAGE](USAGE.md) for how to translate your `mdbook` project.
 
 ## Changelog
 
-Please see [CHANGELOG](../CHANGELOG.md) for details on the changes in each
-release.
+Please see the [CHANGELOG](CHANGELOG.md) for details on the major changes in
+each release.
 
 ## Contact