changelog(alpha-3ZX): update changelog

docs/pages/about/changelog/alpha-3ZX.md

@@ -11,15 +11,21 @@
 - Import [Bootstrap Icons](https://icons.getbootstrap.com) to the admin page by default.
 - Developers now see a warning log when using templates on older, outdated versions of Blueprint.
 - Update related links in `README.md` and update extensions list in both `README.md` and `extensions.md`.
+- Developers can now add export scripts using the new `hasExportScript` flag, allowing for making modifications that do not impact your source code.
+- New throwError library for `blueprint.sh`, which will be used in the future for easier exception logging.
+- Improve code readability on multiple custom internal libraries that are utilized by `blueprint.sh`.
+- No longer use market variables for version names.
+- Add `POST` route for extensions which will trigger a `post()` function in the extension's admin controller.
 
 <br/>
 
 #### Bugfixes
 - Incorrect website button icon for Discord extension website links.
 - Database values were not being synced when running the install script for the first time after upgrading.
 - "Unknown file or directory" errors every time Blueprint logs something when the debug log file is missing.
+- Remove stray .gitkeep file in `.blueprint/extensions/`.
 
 <br/>
 
 #### Breaking Changes
-- None yet.
+- None yet.