Events orchestrator patch.

Changelog excerpt:
- Added guard to the events orchestrator to prevent infinite looping via
  recursive event firing from within handlers.

Changelog.txt

@@ -14,6 +14,9 @@ found at:
 - [2023.08.18; Maikuolan]: Improved tests and documentation for the operation
   handler.
 
+- [2023.08.28; Maikuolan]: Added guard to the events orchestrator to prevent
+  infinite looping via recursive event firing from within handlers.
+
 === Version/Release 1.9.7 ===
 PATCH RELEASE.
 

src/Events.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Events orchestrator (last modified: 2023.08.16).
+ * Events orchestrator (last modified: 2023.08.28).
  *
  * This file is a part of the "common classes package", utilised by a number of
  * packages and projects, including CIDRAM and phpMussel.
@@ -99,12 +99,14 @@ public function destroyEvent($Event)
      */
     public function fireEvent($Event, $Data = '')
     {
-        if (!isset($this->Handlers[$Event], $this->Status[$Event])) {
+        if (!isset($this->Handlers[$Event], $this->Status[$Event]) || isset($this->Status[$Event]['In Progress'])) {
             return false;
         }
+        $this->Status[$Event]['In Progress'] = true;
         foreach ($this->Handlers[$Event] as $Handler) {
             $Handler($Data);
         }
+        unset($this->Status[$Event]['In Progress']);
         return true;
     }