Updated release notes for 4.0

Author: caseysoftware

_includes/nav.html

@@ -4,7 +4,7 @@ <h1>{{ site.title }}</h1>
     <li><a href="/">Home</a></li>
     <li><a href="/docs/installation.html">Install Instructions</a></li>
     <li><a href="/docs/getting-started.html">Getting Started</a></li>
-    <li><a href="/release-notes/3.4.html">v3.4 Release Notes</a></li>
+    <li><a href="/release-notes/4.0.html">v4.0 Release Notes</a></li>
     <li><a href="/modules/core.html">Core Modules</a></li>
     <li><a href="/modules/add-on.html">Add On Modules</a></li>
     <li><a href="/docs/module-building-guide.html">Module Building Guide</a></li>

_release-notes/4.0.md

@@ -0,0 +1,60 @@
+---
+layout: page
+title: v4.0 Release Notes
+---
+
+**Release Date:** 02 January 2025
+
+<div style="background-color: AntiqueWhite; font-style: italic; padding: 15px;">
+    <strong>Note:</strong> The primary focus of this release was to a) reach full PHP 8.x compatibility and b) reach full MySQL 8.x compatbility. All other aspects were secondary to those.
+</div>
+
+{% include download-github.md %}
+
+{% include reporting-problems.md %}
+
+## New Features
+
+* Added carbon to handle date/timezone processing
+
+## Fixes/Bugs Closed
+
+* Updated array references, curly braces, and method signatures for PHP 8.x compatibility
+* Applied database schema updates for mysql 5.6 compatibility
+* Updated database calls for mysql 8.x compatibility - mostly bad date formats (0000-00-00)
+
+## Misc Changes/Improvements
+
+* Removed the `/vendor` directory and let Composer handle it
+* Updated the phing build script to use updated versions of phploc and phpstan
+* Removed ADODB as our needed functionality has moved into core PHP
+* Updated jpgraph to a more recent version
+* Cleaned up the Search module to use the hook_search properly
+* Fixes to numerous views for tables (index), views, and similar to fix warnings
+* Cleaned up a ton of PHP error log warnings
+* Lots of other cleanups throughout, some provided by Opto in the old 3.4 branch
+
+## Open/Known Issues
+
+* Removed the File Explorer from the Files module
+* Removed the file versioning from the Files module
+
+{% include metrics-phing.md %}
+
+* Lines of Code: 64089 (9030 of comments, 55059 of code)
+* Cyclomatic Complexity:
+  * Per Class: 18.48 (min: 1.0, max: 242.0)
+  * Per Method: 2.46 (min: 1.0, max: 64.0)
+  * Per Line of Code: 0.25
+* Interfaces: 2
+* Traits: 0
+* Classes: 133 (128 Concrete, 5 Abstract)
+  * Lines of Code/Class: 84
+  * Class Constants: 6
+  * Methods: 1619 (48 static, 1571 non-static)
+    * Public: 1502
+    * Protected: 108
+    * Private: 9
+  * Lines of Code/Method: 6
+* Functions: 203
+* Constants: 72